Puncture needle head
By designing a puncture needle with drainage grooves and channels, the complex problem of serous drainage operation in the suprachoroidal cavity in the prior art is solved, and the dual functions of puncture and drainage are realized, which improves the efficiency and convenience of the operation.
Patent Information
- Application Number
- CN202323173820.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-23
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2033-11-23
AI Technical Summary
In the prior art, the operation of slurry drainage in the suprachoroidal cavity is complicated and difficult to carry out efficiently.
A puncture needle is designed, which includes a needle body consisting of two needle segments, and the tip is provided with a drainage groove. One end of the drainage groove penetrates through the tip to form an open opening, and the channel is connected to the drainage groove to realize the drainage of the slurry in the suprachoroidal cavity.
The puncture needle can simultaneously realize the drainage function during puncture, simplifying operation and improving the convenience and speed of the operation.
Smart Images
Figure CN222584603U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical devices, and more specifically, to a puncture needle. Background Art
[0002] In related technologies, after anti-glaucoma surgery or vitreoretinal surgery, serous fluid may appear in the suprachoroidal space, which will lead to rhegmatogenous retinal detachment combined with choroidal detachment, traumatic ciliary body detachment, etc.; traumatic suprachoroidal hemorrhage may occur during or after intraocular surgery; intraoperative or postoperative complications may include silicone oil and gas, which may cause pulmonary embolism and even be life-threatening.
[0003] In the prior art, in order to drain the serous fluid in the suprachoroidal space, it is necessary to puncture the eye tissue and then use relevant drainage instruments to drain the serous fluid, which is a complicated operation. Utility Model Content
[0004] The utility model provides a new technical solution for a puncture needle, which can at least solve the problem of complicated operation of suprachoroidal space drainage in the prior art.
[0005] The utility model provides a puncture needle, comprising: a needle body, the needle body comprising a first needle segment and a second needle segment, the first end of the first needle segment is formed as a tip, the second end of the first needle segment is connected to the second needle segment, the first needle segment is provided with a drainage groove extending along its own axial direction, one end of the drainage groove passes through the tip to form a first opening; the second needle segment is provided with a channel extending along its own axial direction, and the channel is connected to the other end of the drainage groove.
[0006] Optionally, the outer circumferential surface of the first needle segment includes a first surface and a second surface connected to each other, the first surface is an arcuate surface extending along the circumference of the needle body, and the first surface smoothly transitions with the outer circumferential surface of the second needle segment, the second surface is a plane, and the drainage groove is arranged on the second surface.
[0007] Optionally, the arc of the first surface is 180°, and the plane where the second surface is located coincides with the axis of the needle body.
[0008] Optionally, the end surface of the first end of the first needle segment is a first inclined surface, the first inclined surface connects the first surface and the second surface respectively, and the first inclined surface extends obliquely relative to the axis of the needle body.
[0009] Optionally, the second needle segment has a second inclined surface at one end close to the first needle segment, the second inclined surface respectively connects the second surface and the outer peripheral surface of the second needle segment, and the second inclined surface extends obliquely relative to the axis of the needle body.
[0010] Optionally, in a direction from the first needle segment toward the second needle segment, the second inclined surface is inclined from one end of the second surface toward an end of the second needle segment away from the first needle segment.
[0011] Optionally, the channel passes through the second inclined surface and forms a second opening on the second inclined surface.
[0012] Optionally, the groove wall surface of the drainage groove is an arc-shaped surface, and the groove wall surface of the drainage groove smoothly transitions with the inner wall surface of the channel.
[0013] Optionally, in the axial direction of the needle body, the length of the drainage groove is 1 mm to 8 mm.
[0014] Optionally, the puncture needle further comprises: a handle, wherein the handle is connected to an end of the needle body away from the tip.
[0015] According to the puncture needle of the utility model, the needle body of the puncture needle is configured to include two needle segments, the tip is arranged at an end of the first needle segment away from the second needle segment, and a drainage groove is arranged adjacent to the tip, so that one end of the drainage groove forms a first opening on the end face of the tip. Therefore, the puncture needle of this embodiment can use the drainage groove to guide the serous fluid in the suprachoroidal space to flow out when the needle body is puncturing, that is, one puncture needle has both puncture and drainage functions, which can make the operation more convenient and quick.
[0016] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.
[0018] Figure 1 It is a side view of a puncture needle according to an embodiment of the utility model;
[0019] Figure 2 yes Figure 1 An enlarged view of the circled portion at A in the middle;
[0020] Figure 3 It is a stereoscopic diagram of a puncture needle according to an embodiment of the utility model;
[0021] Figure 4 yes Figure 3 An enlarged view of the circled portion at B.
[0022] Reference numerals
[0023] Puncture needle 100;
[0024] Needle body 1;
[0025] first needle section 10; tip 11; drainage groove 12; first opening 13; first surface 14; second surface 15; first inclined surface 16;
[0026] Second needle section 20; channel 21; second inclined surface 22; second opening 23;
[0027] Handle 2. DETAILED DESCRIPTION
[0028] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention.
[0029] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
[0030] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.
[0031] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.
[0032] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.
[0033] The puncture needle 100 according to the embodiment of the utility model is described in detail below with reference to the accompanying drawings.
[0034] like Figures 1 to 4 As shown, the puncture needle 100 according to the embodiment of the present utility model comprises: a needle body 1 , and the needle body 1 mainly comprises a first needle segment 10 and a second needle segment 20 .
[0035] Specifically, the first end of the first needle segment 10 is formed as a tip 11, the second end of the first needle segment 10 is connected to the second needle segment 20, the first needle segment 10 is provided with a drainage groove 12 extending along its own axial direction, one end of the drainage groove 12 passes through the tip 11 to form a first opening 13. The second needle segment 20 is provided with a channel 21 extending along its own axial direction, and the channel 21 is connected to the other end of the drainage groove 12.
[0036] In other words, the needle body 1 in the puncture needle 100 according to the embodiment of the utility model is mainly composed of the first needle segment 10 and the second needle segment 20. The puncture needle 100 can be used to puncture a patient. The needle body 1 can be a slender cylindrical member. The first needle segment 10 and the second needle segment 20 are arranged along the axial direction of the needle body 1. For the convenience of explanation, the axial direction of the needle body 1 can be defined as the first direction.
[0037] In the first direction, the first needle segment 10 and the second needle segment 20 have two ends respectively. The first end of the first needle segment 10 is away from the second needle segment 20 and is formed into a tip 11, which can puncture the patient. The second end of the first needle segment 10 can be connected to the first end of the second needle segment 20.
[0038] The first needle section 10 may be provided with a drainage groove 12, and the second needle section 20 may be provided with a channel 21. In the first direction, the drainage groove 12 and the channel 21 may have two ends respectively, one end of the drainage groove 12 may penetrate the end surface of the tip 11 and form a first opening 13 at the end surface, and the other end to which the drainage is conducted may be connected to one end of the channel 21.
[0039] The tip 11 of the needle body 1 can puncture the eye tissue and extend into the suprachoroidal space. The serous fluid in the suprachoroidal space can enter the drainage groove 12 through the first opening 13 and flow to the channel 21 under the drainage guidance of the drainage groove 12. That is, the puncture needle 100 of this embodiment can simultaneously perform the two operations of puncture and drainage.
[0040] Therefore, according to the puncture needle 100 of the embodiment of the utility model, the needle body 1 of the puncture needle 100 is configured to include two needle segments, the tip 11 is arranged at an end of the first needle segment 10 away from the second needle segment 20, and a drainage groove 12 is arranged adjacent to the tip 11, so that one end of the drainage groove 12 forms a first opening 13 on the end surface of the tip 11. Therefore, the puncture needle 100 of this embodiment can use the drainage groove 12 to guide the serous fluid in the suprachoroidal space to flow out when the needle body 1 is puncturing, that is, one puncture needle 100 has both puncture and drainage functions, which can make the operation more convenient and quick.
[0041] According to one embodiment of the utility model, the outer peripheral surface of the first needle segment 10 includes a first surface 14 and a second surface 15 connected to each other, the first surface 14 is an arcuate surface extending along the circumference of the needle body 1, and the first surface 14 and the outer peripheral surface of the second needle segment 20 have a smooth transition, the second surface 15 is a plane, and the drainage groove 12 is arranged on the second surface 15.
[0042] Specifically, the first needle segment 10 can be a slender cylindrical member. Since the second end of the first needle segment 10 is connected to the second needle segment 20, the outer surface of the first needle segment 10 mainly includes the end surface of the first needle segment 10 away from the second needle segment 20 and the outer peripheral surface of the first needle segment 10.
[0043] The outer circumference of the first needle segment 10 may be mainly composed of a first surface 14 and a second surface 15, and the first surface 14 and the second surface 15 surround the outer circumference of the first needle segment 10 along the circumference of the needle body 1. The second needle segment 20 may be a cylindrical member, and the outer circumference of the second needle segment 20 may be the outer circumference of a cylinder. The first surface 14 of the first needle segment 10 may be an arcuate surface extending along the circumference of the needle body 1, and the first surface 14 of the first needle segment 10 may smoothly transition with the outer circumference of the second needle segment 20, so as to avoid the uneven connection between the first needle segment 10 and the second needle segment 20 causing damage to the eye tissue.
[0044] Optionally, the first surface 14 and the outer peripheral surface of the second needle segment 20 may be located on the same arc surface.
[0045] The second surface 15 may be a plane, and the first needle segment 10 formed by the first surface 14 and the second surface 15 may be similar to a cylindrical needle head with a portion cut off along its own axial direction. The drainage groove 12 may be provided on the second surface 15. In the first direction, one end of the second surface 15 may be connected to the end surface of the tip 11, and the other end of the second surface 15 may be connected to the second needle segment 20.
[0046] In this embodiment, the outer peripheral surface of the first needle segment 10 includes an arcuate surface and a plane, and the drainage groove 12 is arranged on the plane. The puncture needle 100 of this embodiment can be processed by cutting off a part of the existing puncture needle 100 along its own axial direction. The structure is simple and easy to manufacture, which is conducive to reducing the manufacturing cost of the puncture needle 100.
[0047] According to some other embodiments of the present invention, the arc of the first surface 14 is 180°, and the plane where the second surface 15 is located coincides with the axis of the needle body 1 .
[0048] In other words, the first needle segment 10 can be semi-cylindrical, that is, the cross-section obtained by cutting the first needle segment 10 except the tip 11 at an arbitrary cross-section perpendicular to the axis of the needle body 1 can be semi-circular, and the arc of the semicircle can be 180°, and the diameter of the semicircle can be the same as the diameter of the second needle segment 20.
[0049] After a portion of a conventional cylindrical needle is cut off along its own axial direction, the hollow structure inside can form a drainage groove 12, so the groove width of the drainage groove 12 is related to the position of the second surface 15. Since the arc of the first surface 14 is 180°, in the plane parallel to the axis of the needle body 1, the area of the second surface 15 corresponding to the plane coinciding with the axis of the needle body 1 is the largest, and the groove width of the drainage groove 12 is the largest, which is conducive to enhancing the drainage effect of the drainage groove 12.
[0050] In some specific embodiments of the present invention, the end surface of the first end of the first needle segment 10 is a first inclined surface 16 , which connects the first surface 14 and the second surface 15 respectively, and extends obliquely relative to the axis of the needle body 1 .
[0051] Specifically, the end surface of the tip 11 of the first needle segment 10 may be a first inclined surface 16, and the first inclined surface 16 is respectively connected to the first surface 14 and the second surface 15. The first inclined surface 16 is arranged to extend obliquely relative to the axial direction of the needle body 1, so that the tip 11 of the first needle segment 10 forms a transition with the rest of the first needle segment 10 through the first inclined surface 16, which is conducive to the puncture operation of the tip 11.
[0052] In the first direction, the first inclined surface 16 may extend obliquely from an end of the second surface 15 away from the second needle segment 20 to a side away from the second needle segment 20 .
[0053] According to some optional embodiments of the present invention, the second needle segment 20 has a second inclined surface 22 at one end close to the first needle segment 10, and the second inclined surface 22 respectively connects the second surface 15 and the outer peripheral surface of the second needle segment 20, and the second inclined surface 22 extends obliquely relative to the axis of the needle body 1.
[0054] Specifically, a portion of the end surface of the first end of the second needle segment 20 may be connected to the first needle segment 10, and another portion may be formed as a second inclined surface 22. The second inclined surface 22 may be connected to the second surface 15 and the outer peripheral surface of the second needle segment 20, respectively.
[0055] The second inclined surface 22 is arranged to extend obliquely relative to the axis of the needle body 1, so that a transition can be formed between the connection between the second needle segment 20 and the first needle segment 10 and other parts of the second needle segment 20, which is beneficial for the puncture needle 100 to perform the puncture operation.
[0056] According to some other embodiments of the present invention, in the direction from the first needle segment 10 toward the second needle segment 20 , the second inclined surface 22 is inclined from one end of the second surface 15 toward an end of the second needle segment 20 away from the first needle segment 10 .
[0057] Specifically, Figure 2As shown, the direction of the second needle segment 20 toward the first needle segment 10 can be defined as the positive direction of the first direction, and the opposite direction can be defined as the reverse direction of the first direction. The second inclined surface 22 can extend from one end of the second surface 15 close to the second needle segment 20 along the reverse direction of the first direction, and the angle θ between the second inclined surface 22 and the second surface 15 can be an obtuse angle, thereby making the connection transition between the first needle segment 10 and the second needle segment 20 smoother.
[0058] In some specific embodiments of the present invention, the channel 21 passes through the second inclined surface 22 and forms a second opening 23 on the second inclined surface 22 .
[0059] The first needle segment 10 can be obtained by cutting off a portion of the cylindrical needle along its radial direction, so that the original hollow structure of the cylindrical needle can form a second opening 23 on the second inclined surface 22 formed during the cutting. The second opening 23 can also guide the serous fluid in the suprachoroidal space to flow into the channel 21.
[0060] According to some optional embodiments of the present invention, the groove wall surface of the drainage groove 12 is an arc-shaped surface, and the groove wall surface of the drainage groove 12 and the inner wall surface of the channel 21 have a smooth transition, thereby allowing the slurry to flow into the channel 21 along the drainage groove 12 without hindrance, thereby improving the drainage effect of the puncture needle 100.
[0061] Optionally, the groove wall surface of the drainage groove 12 and the inner wall surface of the channel 21 may be located on the same circumferential surface.
[0062] According to some other embodiments of the utility model, in the axial direction of the needle body 1, the length of the drainage groove 12 is 1 mm to 8 mm, so that when the tip 11 punctures the eye tissue and enters the suprachoroidal space, the drainage groove 12 can better drain the slurry and improve the drainage effect.
[0063] In some specific embodiments of the present invention, the puncture needle 100 further includes a handle 2, which is connected to the end of the needle body 1 away from the tip 11. In other words, the handle 2 can be connected to the end of the second needle segment 20 away from the first needle segment 10. Connecting the handle 2 to the needle body 1 can facilitate the doctor to perform hand-held operation.
[0064] In summary, the puncture needle 100 of the embodiment of the utility model can use the drainage groove 12 to guide the serous fluid in the suprachoroidal space to flow out when the needle body 1 is puncturing, that is, the puncture needle 100 has both puncture and drainage functions, which can make the operation more convenient and quick.
[0065] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A puncture needle, characterized in that: include: A needle body, the needle body comprising a first needle segment and a second needle segment, The first end of the first needle segment is formed into a tip, the second end of the first needle segment is connected to the second needle segment, the first needle segment is provided with a drainage groove extending along its own axial direction, one end of the drainage groove passes through the tip to form a first opening; The second needle segment is provided with a channel extending along its own axial direction, and the channel is communicated with the other end of the drainage groove.
2. The puncture needle according to claim 1, characterized in that: The outer circumferential surface of the first needle segment includes a first surface and a second surface connected to each other, the first surface is an arcuate surface extending along the circumference of the needle body, and the first surface and the outer circumferential surface of the second needle segment have a smooth transition, the second surface is a plane, and the drainage groove is arranged on the second surface.
3. The puncture needle according to claim 2, characterized in that: The arc of the first surface is 180°, and the plane where the second surface is located coincides with the axis of the needle body.
4. The puncture needle according to claim 2, characterized in that: The end surface of the first end of the first needle segment is a first inclined surface, the first inclined surface connects the first surface and the second surface respectively, and the first inclined surface extends obliquely relative to the axis of the needle body.
5. The puncture needle according to claim 2, characterized in that: One end of the second needle segment close to the first needle segment has a second inclined surface, the second inclined surface respectively connects the second surface and the outer peripheral surface of the second needle segment, and the second inclined surface extends obliquely relative to the axis of the needle body.
6. The puncture needle according to claim 5, characterized in that: In a direction from the first needle segment to the second needle segment, the second inclined surface is inclined from one end of the second surface toward one end of the second needle segment away from the first needle segment.
7. The puncture needle according to claim 5, characterized in that: The channel penetrates through the second inclined surface and forms a second opening on the second inclined surface.
8. The puncture needle according to claim 1, characterized in that: The groove wall surface of the drainage groove is an arc-shaped surface, and the groove wall surface of the drainage groove smoothly transitions with the inner wall surface of the channel.
9. The puncture needle according to claim 1, characterized in that: In the axial direction of the needle body, the length of the drainage groove is 1 mm to 8 mm.
10. The puncture needle according to claim 1, characterized in that: Also includes: A handle is connected to an end of the needle body away from the tip.