Glass cutting head and glass cutting machine
By improving the design of the sealing inner sleeve and coaxial connector of the vitrectomy tip, the difficulties in installing the sealing ring and the airtightness problem were solved, resulting in a simplified structure and stable operation of the vitrectomy tip, and improving the safety and efficiency of ophthalmic surgery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2026-03-27
AI Technical Summary
The sealing ring of the existing glass incision head is difficult to install, is prone to misalignment leading to poor airtightness, and is easily affected by the movement of the inner tube, causing deviation, shaking or detachment, which affects the surgical outcome.
The glass cutter head design includes a mounting handle, drive assembly, retaining assembly, and outer tube. It utilizes a sealing inner sleeve to seal the mounting cavity and mounting channel gaps to ensure airtightness, and improves the stability and sealing of the inner tube movement through annular protrusions and coaxial joints.
This design simplifies the structure of the vitrectomy tip, ensuring that airtightness is not compromised, reducing production costs, avoiding the use of additional fixation devices, and improving surgical safety and ease of operation.
Smart Images
Figure CN224039448U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to medical instrument technical field especially, relates to a kind of glass cutting head and glass cutting machine. BACKGROUND
[0002] Glass cutting head is a kind of medical instrument used in ophthalmic surgery, mainly used for cutting vitreous body, help treating various blinding eye diseases, which is cut by gas drive, with the characteristics of high efficiency, precision, can quickly and accurately remove the vitreous body of pathological change in operation, help doctor complete complex ophthalmic surgery operation.
[0003] At present, the inner tube of glass cutting head is nested in the outer tube, and the inner tube can reciprocate in the outer tube to realize the continuous closing and opening of the glass cutting knife head of the inner tube, and then realize the cutting operation of vitreous body. In the prior art, a sealing ring is provided outside the entrance of the inner tube into the outer tube to ensure the air tightness inside the glass cutting head by the sealing ring, but the sealing ring is difficult to install, and is prone to skew during installation, resulting in poor air tightness. And the sealing ring is easy to be affected by the movement of the inner tube and produce deviation and shake, and it may be separated, so additional devices are needed to fix it. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a kind of glass cutting head and glass cutting machine to solve the problems of poor air tightness caused by the skew of sealing ring during installation in the prior art, and the problems of deviation and shake caused by the movement of the inner tube affecting the sealing ring.
[0005] To achieve the above purpose, the utility model adopts the following technical solutions:
[0006] On the one hand, the utility model provides a kind of glass cutting head, comprising:
[0007] mounting handle;
[0008] drive assembly, the drive assembly is arranged at one end of the mounting handle;
[0009] retaining assembly, the retaining assembly includes mounting seat and sealing inner sleeve, the mounting seat is arranged in the mounting handle; The mounting seat has mounting cavity and mounting channel which are communicated with each other, the side of the mounting cavity towards the mounting channel is recessed to form mounting groove, and the sealing inner sleeve is embedded in the mounting groove;
[0010] outer tube, the outer tube is arranged in the mounting channel, and one end of the outer tube is arranged to extend away from the side of the mounting cavity;
[0011] An inner tube, one end of the inner tube is connected to a driving end of the driving assembly, the other end of the inner tube is nested in the outer tube after passing through the sealing inner sleeve; the driving assembly is used to drive the inner tube to move in a first direction, and the sealing inner sleeve is used to block a gap between the installation cavity and the installation channel.
[0012] As an optional solution of the above glass cutting head, the sealing inner sleeve is provided with an avoiding channel, an inner wall of the avoiding channel is provided with an annular protrusion, the inner tube passes through the avoiding channel via the annular protrusion, and the annular protrusion can elastically abut against the inner tube.
[0013] As an optional solution of the above glass cutting head, the driving assembly comprises a driving shell, a driving partition valve and a driving pipe, the driving pipe is arranged on the driving partition valve and connected and communicated with the inner tube; the driving shell has a driving cavity, the driving partition valve is movably arranged in the driving cavity in the first direction; the driving partition valve can divide the driving cavity into a first chamber and a second chamber.
[0014] As an optional solution of the above glass cutting head, the driving shell is provided with a first air inlet channel and a second air inlet channel, the first air inlet channel is communicated with the first chamber, and the second air inlet channel is communicated with the second chamber.
[0015] As an optional solution of the above glass cutting head, the driving shell is provided with a pipe channel, and the pipe channel is communicated with the driving pipe.
[0016] As an optional solution of the above glass cutting head, the driving shell comprises a first shell and a second shell, the first shell and the second shell are detachably connected, the driving partition valve is arranged between the first shell and the second shell, and the mounting seat is detachably connected to the second shell.
[0017] As an optional solution of the above glass cutting head, the driving assembly further comprises a first sealing member and a second sealing member, the first sealing member is located in the first chamber, is sleeved outside the driving pipe and is used to seal a gap between the driving pipe and an inner wall of the first chamber, and the second sealing member is located in the second chamber, is sleeved outside the driving pipe and is used to seal a gap between the driving pipe and an inner wall of the second chamber.
[0018] As an optional solution of the above glass cutting head, the glass cutting head further comprises a coaxial connector, the coaxial connector comprises a first limiting channel and a second limiting channel, one end of the driving pipe is nested in the first limiting channel, one end of the inner tube is nested in the second limiting channel, and the first limiting channel and the second limiting channel are coaxially arranged.
[0019] As an optional solution of the above glass cutting head, the glass cutting head further comprises a sheath, the sheath is sleeved outside the mounting handle, and the sheath is provided with a plurality of anti-skid protrusions at intervals in the circumferential direction.
[0020] In another aspect, the utility model provides a kind of glass cutting machine, including the glass cutting head as above.
[0021] The utility model has the advantages of:
[0022] The glass cutting head includes a mounting handle, a driving assembly, a retaining assembly, an outer tube, and an inner tube. A doctor can conveniently hold the glass cutting head by hand holding the mounting handle. The retaining assembly includes a mounting seat and a sealing inner sleeve. The mounting seat is arranged in the mounting handle and has a mounting cavity and a mounting channel that are in communication with each other. An installation groove is recessed on the side of the mounting cavity facing the mounting channel. The sealing inner sleeve is embedded in the installation groove, so that the sealing inner sleeve can separate the mounting cavity and the mounting channel. The outer tube is arranged in the mounting channel, and one end of the outer tube extends away from the mounting cavity. One end of the inner tube is connected to the driving end of the driving assembly, and the other end of the inner tube is nested in the outer tube after passing through the sealing inner sleeve. Thus, the outer tube and the inner tube can enter the eyeball at the same time. The driving assembly is arranged at one end of the mounting handle and is used to drive the inner tube to move in a first direction. Thus, the inner tube can move relative to the outer tube under the driving of the driving assembly to continuously close and open the glass cutting knife head of the inner tube, thereby realizing the cutting operation of the vitreous body. At the same time, the sealing inner sleeve is used to block the gap between the mounting cavity and the mounting channel, thereby ensuring the air tightness on both sides while the inner tube moves. The sealing inner sleeve is easy to install and will not be skewed during installation to cause poor air tightness. After the sealing inner sleeve is embedded in the sealing groove, the movement of the inner tube will not cause the sealing inner sleeve to shake or detach, thereby avoiding affecting the ophthalmic surgery. The use of the sealing inner sleeve can simplify the structure of the glass cutting head, eliminate the need for additional fixing devices, simplify the assembly, and avoid affecting other manufacturing processes, thereby reducing production costs. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1 The structure diagram of the glass cutting head provided by the utility model embodiment is shown.
[0024] Figure 2 The cross-sectional view of the glass cutting head provided by the utility model embodiment is shown.
[0025] Figure 3 The first partial cross-sectional view of the glass cutting head provided by the utility model embodiment is shown.
[0026] Figure 4 The second partial cross-sectional view of the glass cutting head provided by the utility model embodiment is shown.
[0027] In the figure:
[0028] 1, mounting handle; 2, drive assembly; 21, drive housing; 211, drive cavity; 2111, first chamber; 2112, second chamber; 212, first air inlet channel; 213, second air inlet channel; 214, pipeline channel; 215, first housing; 216, second housing; 217, first sealing element; 218, second sealing element; 22, drive valve; 23, drive pipe; 3, retaining assembly; 31, mounting seat; 311, mounting cavity; 312, mounting channel; 313, mounting groove; 32, sealing inner sleeve; 321, avoiding channel; 322, annular protrusion; 4, outer pipe; 5, inner pipe; 6, coaxial joint; 61, first limiting channel; 62, second limiting channel; 7, sheath; 71, anti-skid protrusion. DETAILED DESCRIPTION
[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0030] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the "above", "above" and "above" of the first feature to the second feature include the "above" and "oblique above" of the first feature to the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include the "below" and "oblique below" of the first feature to the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.
[0031] In the description of the utility model, it is necessary to explain, unless there is definite stipulation and limitation, the term "installation", "connection" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;It can be direct connection, also can be indirectly connected through the intermediate medium, it can be two elements inside the communication.For ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.
[0032] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout the drawings.The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.
[0033] As Figures 1-4 Indicated, the utility model provides a glass cutting head for cutting vitreous in ophthalmic surgery.
[0034] The glass cutting head comprises a mounting handle 1, a driving assembly 2, a retaining assembly 3, an outer tube 4 and an inner tube 5, and doctors can conveniently hold the glass cutting head by hand holding the mounting handle 1.The retaining assembly 3 comprises a mounting seat 31 and a sealing inner sleeve 32, the mounting seat 31 is arranged in the mounting handle 1, the mounting seat 31 has a mounting cavity 311 and a mounting channel 312 in communication with each other, the side of the mounting cavity 311 towards the mounting channel 312 is recessed to form a mounting groove 313, and the sealing inner sleeve 32 is embedded in the mounting groove 313, so that the sealing inner sleeve 32 can separate the mounting cavity 311 and the mounting channel 312. Optionally, the glass cutting head further comprises a sheath 7, the sheath 7 is sleeved on the outside of the mounting handle 1, and the mounting handle 1 can be protected by the sheath 7, and meanwhile the sheath 7 is provided with a plurality of anti-skid protrusions 71 in a circumferential direction, so that doctors can conveniently grasp the anti-skid protrusions 71 to prevent the glass cutting head from falling during use.
[0035] Among them, the outer tube 4 is arranged in the mounting channel 312, one end of the outer tube 4 extends away from the side of the mounting cavity 311, one end of the inner tube 5 is connected to the driving end of the driving assembly 2, the other end of the inner tube 5 is nested in the outer tube 4 after passing through the sealing inner sleeve 32, so that the outer tube 4 and the inner tube 5 can enter the eyeball at the same time, and the driving assembly 2 is arranged at one end of the mounting handle 1, and the driving assembly 2 is used to drive the inner tube 5 to move in the first direction (i.e., the X direction in the drawing), so that the inner tube 5 can move relative to the outer tube 4 under the driving of the driving assembly 2, so as to realize the continuous closing and opening of the glass cutting knife head of the inner tube 5, and then realize the cutting operation of the vitreous.
[0036] Meanwhile, the sealing inner sleeve 32 is used to seal the gap between the installation cavity 311 and the installation channel 312, thereby ensuring the air tightness on both sides while the inner tube 5 is moving. The sealing inner sleeve 32 is simple to install and will not cause poor air tightness due to skewing during installation. After the sealing inner sleeve 32 is embedded in the sealing groove, the movement of the inner tube 5 will not cause the sealing inner sleeve 32 to shake or disengage, thereby avoiding affecting ophthalmic surgery. The use of the sealing inner sleeve 32 can simplify the structure of the vitreous cutting head, without the need for additional fixing devices, thereby simplifying assembly and not affecting other manufacturing processes, thereby reducing production costs.
[0037] Specifically, as shown in Figure 2 and Figure 3 , the sealing inner sleeve 32 is provided with an avoiding channel 321, and the inner wall of the avoiding channel 321 is provided with an annular protrusion 322. The inner tube 5 passes through the avoiding channel 321 via the annular protrusion 322, and the annular protrusion 322 can elastically abut against the inner tube 5, thereby facilitating the passage of the inner tube 5 through the avoiding channel 321. The sealing between the annular protrusion 322 and the inner tube 5 is achieved only by the annular protrusion 322, so that only the annular protrusion 322 will deform during the movement of the inner tube 5, without affecting other parts of the sealing inner sleeve 32. Optionally, the inner diameter of the avoiding channel 321 is greater than the outer diameter of the inner tube 5, and the minimum inner diameter of the annular protrusion 322 is less than or equal to the outer diameter of the inner tube 5. Further optionally, the part of the annular protrusion 322 in contact with the inner tube 5 is arc-shaped. Of course, the part of the annular protrusion 322 in contact with the inner tube 5 can also be other shapes, which are not limited in the present embodiment.
[0038] As shown in Figure 2 and Figure 4As shown, the driving assembly 2 comprises a driving housing 21, a driving partition valve 22 and a driving pipe 23, the driving pipe 23 is arranged on the driving partition valve 22 and is connected and communicated with the inner pipe 5, the driving housing 21 has a driving cavity 211, the driving partition valve 22 is movably arranged in the driving cavity 211 along a first direction, the driving partition valve 22 can divide the driving cavity 211 into a first chamber 2111 and a second chamber 2112, so that by changing the air pressure in the first chamber 2111 and the second chamber 2112, the movement of the driving partition valve 22 in the driving cavity 211 can be realized, so that the driving partition valve 22 drives the driving pipe 23 to move, and then the driving pipe 23 drives the inner pipe 5 to reciprocate relative to the outer pipe 4. Specifically, the driving housing 21 has a first air inlet passage 212 and a second air inlet passage 213, the first air inlet passage 212 is communicated with the first chamber 2111, and the second air inlet passage 213 is communicated with the second chamber 2112, so that the air pressure difference between the first chamber 2111 and the second chamber 2112 can be adjusted through the first passage and the second passage, so as to realize the driving of the driving partition valve 22. At the same time, the driving housing 21 has a pipeline passage 214, the pipeline passage 214 is communicated with the driving pipe 23, so that through the arrangement of the pipeline passage 214, the driving pipe 23 and the inner pipe 5, the suction of the excised vitreous body can be realized.
[0039] Further, the driving housing 21 comprises a first housing 215 and a second housing 216, the first housing 215 and the second housing 216 are detachably connected, the driving partition valve 22 is arranged between the first housing 215 and the second housing 216, and the mounting seat 31 is detachably connected to the second housing 216. Through the detachable connection of the first housing 215 and the second housing 216, the installation of the driving partition valve 22, the mounting seat 31, the sealing inner sleeve 32 and the inner pipe 5 can be facilitated, and the second housing 216 can limit and fix the mounting seat 31, so that the inner pipe 5 can pass through the sealing inner sleeve 32 and enter the outer pipe 4, thereby reducing the assembly difficulty.
[0040] Further, the driving assembly 2 further comprises a first sealing member 217 and a second sealing member 218, the first sealing member 217 is located in the first chamber 2111 and is sleeved outside the driving pipe 23, and is used for sealing the gap between the driving pipe 23 and the inner wall of the first chamber 2111, and the second sealing member 218 is located in the second chamber 2112 and is sleeved outside the driving pipe 23, and is used for sealing the gap between the driving pipe 23 and the inner wall of the second chamber 2112, so that the first chamber 2111 and the second chamber 2112 are sealed. Optionally, the first sealing member 217 is provided with a plurality of and / or the second sealing member 218 is provided with a plurality of, a spacer sleeve is arranged between adjacent two first sealing members 217 and / or between adjacent two second sealing members 218, and the spacer sleeve is sleeved outside the driving pipe 23, so that the plurality of first sealing members 217 and / or the plurality of second sealing members 218 can be isolated through the spacer sleeve, so as to improve the sealing strength.
[0041] As Figure 3 shown, the glass cutting head further comprises a coaxial joint 6, the coaxial joint 6 comprises a first limiting channel 61 and a second limiting channel 62, one end of the driving pipe 23 is nested in the first limiting channel 61, one end of the inner pipe 5 is nested in the second limiting channel 62, the first limiting channel 61 and the second limiting channel 62 are coaxially arranged, so that through the arrangement of the coaxial joint 6, the coaxiality between the driving pipe 23 and the inner pipe 5 can be ensured, so that the driving pipe 23 does not appear to be skewed during the movement of the inner pipe 5, and the connection strength between the driving pipe 23 and the inner pipe 5 is reduced through the coaxial joint 6.
[0042] The embodiment also provides a glass cutting machine comprising the glass cutting head, the glass cutting machine can improve the safety in the ophthalmic surgery by using the glass cutting head, the sealing inner sleeve 32 is simple to install, and the problem of poor air tightness caused by skewing during installation is avoided, and after the sealing inner sleeve 32 is embedded in the sealing groove, the movement of the inner pipe 5 will not cause the sealing inner sleeve 32 to shake or separate, thereby avoiding affecting the ophthalmic surgery.
[0043] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, other different forms of changes or changes can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model claims.
Claims
1. A glass cutting head, characterized by, The utility model relates to a kind of installation handle (1);Drive assembly (2), which is provided at one end of the installation handle (1);Retaining assembly (3), comprising mounting seat (31) and sealing inner sleeve (32), the mounting seat (31) is provided in the installation handle (1);The mounting seat (31) has installation cavity (311) and installation channel (312) that are communicated with each other, the side of installation cavity (311) towards installation channel (312) recessed is formed with installation groove (313), the sealing inner sleeve (32) is embedded in the installation groove (313);Outer tube (4), which is provided in the installation channel (312), one end of the outer tube (4) is arranged to extend away from the installation cavity (311) side;Inner tube (5), one end of the inner tube (5) is connected to the drive end of the drive assembly (2), the other end of the inner tube (5) is nested in the outer tube (4) after passing through the sealing inner sleeve (32);The drive assembly (2) is used to drive the inner tube (5) to move in the first direction, and the sealing inner sleeve (32) is used to block the gap between the installation cavity (311) and the installation channel (312). The sealing inner sleeve (32) is provided with an avoiding channel (321), and the inner wall of the avoiding channel (321) is provided with an annular protrusion (322), the inner tube (5) passes through the avoiding channel (321) via the annular protrusion (322), and the annular protrusion (322) can elastically abut against the inner tube (5). The drive assembly (2) includes a drive housing (21), a drive valve (22), and a drive tube (23), the drive tube (23) is provided on the drive valve (22) and is connected and communicated with the inner tube (5), the drive housing (21) has a drive cavity (211), the drive valve (22) is movably arranged in the drive cavity (211) in the first direction, and the drive valve (22) can divide the drive cavity (211) into a first chamber (2111) and a second chamber (2112). The drive housing (21) has a first air inlet channel (212) and a second air inlet channel (213), the first air inlet channel (212) is communicated with the first chamber (2111), and the second air inlet channel (213) is communicated with the second chamber (2112). The drive housing (21) has a pipeline channel (214), and the pipeline channel (214) is communicated with the drive tube (23). The drive housing (21) includes a first housing (215) and a second housing (216), the first housing (215) and the second housing (216) are detachably connected, the drive valve (22) is arranged between the first housing (215) and the second housing (216), and the mounting seat (31) is detachably connected to the second housing (216).
2. The glass cutting head of claim 1, wherein, 3. The glass cutting head of claim 1, wherein, 4. The glass cutting head of claim 3, wherein, 5. The glass cutting head of claim 3, wherein, 6. The glass cutting head of claim 3, wherein, 7. The glass cutting head of claim 3, wherein, The driving assembly (2) further comprises a first sealing member (217) and a second sealing member (218), the first sealing member (217) is located in the first cavity (2111), is sleeved outside the driving pipe (23), and is used for sealing the gap between the driving pipe (23) and the inner wall of the first cavity (2111); the second sealing member (218) is located in the second cavity (2112), is sleeved outside the driving pipe (23), and is used for sealing the gap between the driving pipe (23) and the inner wall of the second cavity (2112).
8. The glass cutting head of claim 3, wherein, The glass cutting head further comprises a coaxial joint (6), the coaxial joint (6) comprises a first limiting channel (61) and a second limiting channel (62), one end of the driving pipe (23) is nested in the first limiting channel (61), one end of the inner pipe (5) is nested in the second limiting channel (62), and the first limiting channel (61) and the second limiting channel (62) are coaxially arranged.
9. The glass cutting head according to any one of claims 1 to 8, wherein The glass cutting head further comprises a sheath (7), the sheath (7) is sleeved outside the mounting handle (1), and the sheath (7) is circumferentially and interval ly provided with a plurality of anti-skid protrusions (71).
10. A glass cutting machine characterized by, The glass cutting head comprises the glass cutting head according to any one of claims 1-9.