CN112545749B - Float-suction type eye tissue vitreous body cutting head - Google Patents
Float-suction type eye tissue vitreous body cutting head Download PDFInfo
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- CN112545749B CN112545749B CN202011571813.8A CN202011571813A CN112545749B CN 112545749 B CN112545749 B CN 112545749B CN 202011571813 A CN202011571813 A CN 202011571813A CN 112545749 B CN112545749 B CN 112545749B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F9/00—Methods or devices for treatment of the eyes; Devices for putting-in contact lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
- A61F9/007—Methods or devices for eye surgery
- A61F9/00736—Instruments for removal of intra-ocular material or intra-ocular injection, e.g. cataract instruments
Abstract
A floating suction type eye tissue vitreous body cutting head is characterized in that a connecting part and a cutting part are respectively arranged at two ends of a pipe body, after the connecting part is connected into a vitreous body cutter, the pipe body is driven by an external power source to rotate, swing or vibrate around the center of the pipe body, so that the cutting part cuts and sucks an eye tissue vitreous body, the cutting part is provided with an arc warping part, and the upper surface of the arc warping part is provided with a sunken liquid suction area; the bottom end of the negative pressure pipette extends into the concave pipette area; the arc-shaped warping part is internally provided with a mounting cavity which is opened downwards, and a cutting assembly used for cutting the vitreous body is mounted in the mounting cavity. According to the invention, under the action of a power source which rotates, vibrates or swings, the cutting assembly directly cuts the vitreous humor, and then the vitreous humor is sucked away by the negative-pressure liquid suction pipe, and the structure that the vitreous humor is floated and gathered in the concave liquid suction area after being cut solves the problem that the pathological vitreous humor is difficult to suck, so that the liquid suction process is smoother, and the efficiency is higher.
Description
Technical Field
The invention relates to a vitreous humor cutting instrument in an ophthalmic operation, in particular to a float-suction type eye tissue vitreous humor cutting head.
Background
The vitreous body is a semisolid colloidal substance in the eye and is filled in the vitreous cavity. Normally, the vitreous has good light transmission to allow the retina to adhere to the choroid. If the vitreous body is diseased, a light person can feel that mosquitoes fly in front of eyes when seeing the vitreous body, a heavy person can completely shield light rays to lose sight, and peripheral tissue diseases such as retinal detachment and the like can be caused, so that the whole eyeball is damaged.
The basic functions of vitrectomy are to remove turbid vitreous or to remove vitreoretinal traction, restore clear refractive interstitium and promote retinal replacement, and to treat vitreoretinal disease to restore visual function to the patient.
The cutting head used by the existing vitreous cutter generally cuts off and sucks away the vitreous body by utilizing the relative motion of the inner tube and the outer tube, and a vitreous body fluid suction inlet of the cutting head with the structure is generally arranged on the side surface of the outer tube, so that the damage to the eye nerve when the vitreous body is sucked by negative pressure can be effectively reduced, but the cutting efficiency is very low because the cutting head cuts by the relative motion of the inner tube and the outer tube after the vitreous body is sucked; moreover, the diseased vitreous body is easy to generate lens nucleus, and is also easy to be tightly combined with tissues such as organic membrane, blood clot and the like, so that the lens nucleus is difficult to be sucked into the lumen.
Disclosure of Invention
In order to solve the problem that the pathological vitreous body is difficult to suck due to the fact that the suction hole of the existing vitreous body cutting head is formed in the side face, the invention provides a floating suction type vitreous body cutting head for eye tissue.
The technical scheme adopted by the invention for solving the technical problems is as follows: a floating suction type eye tissue vitreous body cutting head comprises a pipe body, wherein a connecting part and a cutting part are respectively arranged at two ends of the pipe body, after the connecting part is connected into a vitreous body cutter, the pipe body is driven by an external power source to rotate, swing or vibrate around the center of the pipe body, so that the cutting part can cut and absorb eye tissue vitreous bodies, the cutting part is cylindrical, the end part of the cutting part is provided with an arc warping part horizontally extending towards one side of the cutting part, the upper surface of the arc warping part is provided with a sunken liquid suction area sunken from the edge to the center, and when the pipe body acts, the cut vitreous body fluid can cross the edge of the cut vitreous body and be gathered in the central sunken part of the pipe body; the bottom end of the negative pressure liquid suction pipe penetrating through the pipe body and the cutting part extends into the lowest part of the sunken liquid suction area, and the vitreous humor in the sunken liquid suction area is sucked under the action of negative pressure; the inside installation cavity that has the downward opening in arc warpage portion installs the cutting subassembly that is used for cutting the vitreous in this installation cavity.
As another optimization scheme of the floating suction type eye tissue vitreous body cutting head, the edge of the sunken liquid suction area exceeds the projection range of the cutting part, and the sunken liquid suction area is in transition fit with the side surface of the cutting part through an arc-shaped slope surface.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, the outer surface of the sunken liquid suction area is arc-shaped, and an included angle of 65-80 degrees is formed between a connecting line of the highest point and the lowest point of the outer surface and the horizontal plane.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, a plurality of cutting teeth are arranged in the suction inlet of the negative pressure pipette, and the cutting teeth are irregularly distributed, so that vitreous body fluid entering the suction inlet is cut again.
As another kind of optimization scheme of above-mentioned float suction formula eye tissue vitreous body cutting head, cutting assembly is including being used for sealing installation cavity open-ended blade disc, and distributes at the lower surface of blade disc and has a plurality of curved cutting silks that are, these cutting silks parallel arrangement, and the height that the cutting silk protrudes the blade disc lower surface reduces to both sides from the centre gradually, is in the protruding minimum cutting silk of height of both sides edge, and its minimum is less than the minimum of arc warpage portion to make the lower surface of arc warpage portion pass through cutting silk and eye tissue contact.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, the cutter head is circular, an annular connecting wing plate is arranged around the edge of the cutter head, and the connecting wing plate is clamped in an annular groove in the side wall of a circular fixing ring arranged at the edge of an opening of the installation cavity.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, the cutter head is driven by external pneumatic power, liquid power or electric power to rotate around the center of the cutter head, and in the rotating process, the cutting wires on the lower surface of the cutter head complete cutting of the vitreous body.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, the lower surface of the cutter head is a plane or an arc with a downward convex shape, and the downward convex amplitude is gradually reduced from the center to the edge.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, a positive pressure space is formed in the installation cavity through the air replenishing pipe penetrating through the pipe body and the cutting part, and the pressure in the positive pressure space is kept to be 110-140% of the intraocular pressure of a patient.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, a sealing plate is arranged in a mounting cavity above the cutter head, and a power source for driving the cutter head to rotate is arranged at the upper part of the sealing plate.
As another optimization scheme of the float-suction type eye tissue vitreous body cutting head, a positive pressure space is formed between the sealing plate and the cutter head, a buffer air cavity is arranged in the sealing plate and is communicated with a sterile air source through an air supplementing pipe penetrating through the pipe body and the cutting part, air holes communicated with the positive pressure space are formed in the buffer air cavity, and sterile air in the buffer air cavity enters the positive pressure space through the air holes so as to ensure that the pressure in the positive pressure space is kept at 110-140% of the intraocular pressure of a patient.
Compared with the prior art, the invention has the following beneficial effects:
1) According to the invention, the end part is provided with the arc warping part which extends horizontally, the upper surface of the arc warping part forms the concave liquid suction area, and the lower surface is provided with the cutting component which is in direct contact with the vitreous humor;
2) The cutting assembly is arranged on the lower surface of the arc warping part and is directly contacted with the vitreous humor, so that the technical effects of cutting and then sucking the vitreous humor are realized, the sucking efficiency is improved, meanwhile, the cutting wires on the surface of the cutting assembly are distributed in an arc shape and gradually reduced from the middle to two sides, so that the cutting assembly formed by the whole cutting wires presents an arc shape, and the structure is convenient for adjusting the depth of the cutting assembly cutting into the vitreous humor; the lower surface of the arc warping part is also arc-shaped, so that the situation that the hard material at the edge mechanically impacts eye tissues in the vibration, swing or rotation process of the cutting head in the operation process to generate secondary damage can be avoided;
3) The cutter disc of the cutting assembly is arranged in the mounting cavity, an independent power source can be arranged in the mounting cavity to drive the cutter disc to rotate, the cutting efficiency is improved, more importantly, a positive pressure space can be generated on the back surface of the cutter disc, the positive pressure space cannot guarantee no air leakage, therefore, in the operation process, weak air flow inevitably escapes along with the rotation of the cutter disc, the air flow can promote vitreous humor to move and enter the concave liquid suction area, and more importantly, the effect of assisting the eye pressure balance in the operation process can be achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic cross-sectional view of a cutting portion according to the present invention;
FIG. 3 is a schematic top view of the cutting portion of the present invention;
FIG. 4 is a schematic view of a cutting assembly;
FIG. 5 is a side schematic view of a cutting wire on the cutter head;
FIG. 6 is a schematic bottom view of the distribution of the cutting filaments on the cutter head;
reference numerals: 1. connecting portion, 2, body, 3, cutting part, 301, arc warpage portion, 302, sunken imbibition district, 303, arc domatic, 304, negative pressure pipette, 305, suction inlet, 306, cutting tooth, 307, installation cavity, 308, air supplement pipe, 4, cutting assembly, 401, power supply, 402, closing plate, 403, positive pressure space, 404, buffering air cavity, 405, blade disc, 406, cutting wire, 407, connection pterygoid lamina, 408, circular solid fixed ring.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the following specific embodiments. The following embodiments of the present invention are not illustrated, and examples thereof include a structure of the connecting portion, a structure of the pipe body, and a power source for driving the pipe body to rotate, swing, or vibrate.
Example 1
As shown in fig. 1-3, a float-suction type eye tissue vitreous body cutting head comprises a tube body 2, wherein two ends of the tube body 2 are respectively provided with a connecting part 1 and a cutting part 3, after the connecting part 1 is connected to a vitreous body cutter, the tube body 2 is driven by an external power source to rotate, swing or vibrate around the center of the tube body, so that the cutting part 3 cuts and sucks eye tissue vitreous bodies, the cutting part 3 is cylindrical, the end part of the cutting part is provided with an arc warping part 301 horizontally extending towards one side of the cutting part, the upper surface of the arc warping part 301 is provided with a sunken liquid suction area 302 sunken from the edge to the center, and when the tube body 2 acts, the cut vitreous body fluid can cross the edge and gather in the central sunken part of the tube body 302; the bottom end of the negative pressure pipette 304 penetrating through the pipe body 2 and the cutting part 3 extends into the lowest part of the concave pipette area 302, and sucks the vitreous humor in the concave pipette area 302 under the action of negative pressure; inside the curved warping portion 301, there is a mounting cavity 307 which is opened downward, and a cutting assembly 4 for cutting a glass body is mounted inside the mounting cavity 307.
In this embodiment, the arc-shaped warping part 301 is actually in the shape of a spoon, and the lower surface thereof is also in the shape of an arc, so that the vitreous humor can be gathered in the arc-shaped warping part 301 by spreading over the edge thereof in any vibration, rotation or swing process, thereby enabling the liquid suction process to be smoother.
In the present embodiment, the negative pressure pipette 304 can be connected to a negative pressure source after the attachment 1 is attached to the vitreous cutter, so as to suck and store the cut vitreous humor, which belongs to the structure of the existing vitreous cutter and is not described herein; in addition, the rotation, swing or vibration of the tube body 2 driven by the vitreous cutter, or the composite motion of more than two of the rotation, swing and vibration, belong to the prior art, and do not relate to the improvement point of the present invention, and are not described herein.
The foregoing is a basic embodiment of the present invention, and further modifications, optimizations and limitations can be made on the foregoing, so as to obtain the following examples:
example 2
This embodiment is an improved scheme based on embodiment 1, and the main structure thereof is the same as embodiment 1, and the improvement point is that: as shown in fig. 1 and 2, the edge of the concave liquid suction area 302 exceeds the projection range of the cutting part 3, and the concave liquid suction area 302 and the side surface of the cutting part 3 are in transition fit through an arc-shaped slope surface 303.
In this embodiment, the projection range of the edge of the concave liquid suction region 302 beyond the cutting part 3 means that the width of the edge of the concave liquid suction region 302 exceeds the diameter of the cutting part 3.
Example 3
The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in figures 1 and 2, the outer surface of the concave liquid absorbing area 302 is arc-shaped, and the connecting line of the highest point and the lowest point of the outer surface forms an included angle of 65-80 degrees with the horizontal plane.
Example 4
The embodiment is another improvement scheme based on the embodiment 1, and the main structure of the embodiment is the same as the embodiment 1, and the improvement points are as follows: as shown in fig. 1, 2 and 3, the suction port 305 of the negative pressure pipette 304 is in an inclined state, so that the upper end of the tubular body of the negative pressure pipette 304 forms a smooth transition with the surface of the concave liquid suction area 302 (i.e. a cut is cut at the end of the negative pressure pipette 304 to form an inclined cross section, and the longer side of the inclined cross section is tightly attached to the surface of the concave liquid suction area 302), and a plurality of cutting teeth 306 are arranged in the suction port 305 of the negative pressure pipette 304, and the cutting teeth 306 are randomly distributed, so that the vitreous humor entering the suction port 305 is cut again.
In this embodiment, the cutting teeth 306 are in the form of flat triangles or pyramids that when seated have a somewhat upward pointing tip with a sharp edge forming a cutting edge toward the direction of vitreous humor entry.
The irregular distribution means that the distribution of the cutting teeth 306 is not regular, so that the vitreous humor is cut by touching as many cutting teeth 306 as possible during the process of being inhaled;
the cutting teeth 306 are distributed around the suction port 305 and extend into the suction port 305 for a certain length, and the tips of the cutting teeth 306 located at the lower side are located between two cutting teeth 306 located at the corresponding positions at the upper side.
Example 5
The present embodiment is another modified scheme based on embodiment 1, and the main structure of the present embodiment is the same as that of embodiment 1, and the improvement point is that: as shown in fig. 4, 5 and 6, the cutting assembly 4 includes a cutter disc 405 for closing the opening of the installation cavity 307, and a plurality of arc-shaped cutting wires 406 are distributed on the lower surface of the cutter disc 405, the cutting wires 406 are arranged in parallel, and the height of the cutting wires 406 protruding out of the lower surface of the cutter disc 405 gradually decreases from the middle to the two sides, the cutting wires 406 with the lowest protruding height are located at the edges of the two sides, and the lowest position of the cutting wires 406 is lower than the lowest position of the arc-shaped warping portion 301, so that the lower surface of the arc-shaped warping portion 301 is in contact with eye tissues through the cutting wires 406.
Example 6
This embodiment is an improved scheme based on embodiment 5, and the main structure thereof is the same as embodiment 5, and the improvement point is as follows: as shown in fig. 4, 5 and 6, the impeller 405 is circular and has an annular coupling flange 407 around its periphery, the coupling flange 407 being engaged in an annular groove in the side wall of a circular fixing ring 408 provided at the open edge of the mounting cavity 307.
Example 7
This embodiment is another modified scheme based on embodiment 5, and the main structure thereof is the same as embodiment 5, and the improvement point is that: as shown in fig. 4, 5 and 6, the cutter head 405 is driven by external gas power, liquid power or electric power to rotate around its center, and during the rotation, the cutting wires 406 on the lower surface complete the cutting of the vitreous body.
Example 8
This embodiment is another modified scheme based on embodiment 5, and the main structure thereof is the same as embodiment 5, and the improvement point is that: as shown in fig. 4, 5 and 6, the lower surface of the impeller 405 is flat or is in the shape of a downward convex arc, and the downward convex amplitude gradually decreases from the center to the edge.
Example 9
This embodiment is another modified scheme based on embodiment 5, and the main structure thereof is the same as embodiment 5, and the improvement point is that: as shown in fig. 4, a positive pressure space 403 is formed in the installation cavity 307 by the air supplement tube 308 penetrating the tube body 2 and the cutting part 3, and the pressure in the positive pressure space 403 is maintained at 110-140% of the intraocular pressure of the patient.
In this embodiment, the introduced gas is sterile air, and the flow rate are not too fast, in practice, the intraocular pressure of a patient needs to be detected in advance, then the intraocular pressure value is multiplied by 110-140% to obtain a positive pressure value to be controlled, then attenuation is considered, the positive pressure value is multiplied by 1.15 to obtain an air pressure value, the external sterile air pressure is adjusted to the air pressure value, then the sterile air is introduced into the positive pressure space, and the flow rate is generally controlled to be 0.2-0.3m/s.
Example 10
This embodiment is another modified scheme based on embodiment 5, and the main structure thereof is the same as embodiment 5, and the improvement point is that: as shown in fig. 4, a sealing plate 402 is disposed in the mounting cavity 307 above the cutter disc 405, and a power source 401 for driving the cutter disc 405 to rotate is provided at an upper portion of the sealing plate 402.
Example 11
This embodiment is an improved scheme based on embodiment 10, and the main structure thereof is the same as that of embodiment 10, and the improvement point is that: as shown in fig. 4, a positive pressure space 403 is formed between the sealing plate 402 and the cutter head 405, a buffer air chamber 404 is provided in the sealing plate 402, the buffer air chamber 404 is communicated with a sterile air source through an air supplement pipe 308 penetrating the tube body 2 and the cutting part 3, air holes communicated with the positive pressure space 403 are provided on the buffer air chamber 404, and the sterile air in the buffer air chamber is introduced into the positive pressure space 403 through the air holes, so as to ensure that the pressure in the positive pressure space 403 is kept at 110-140% of the intraocular pressure of the patient.
In this embodiment, the introduced gas is sterile air, and the flow rate are not too fast, in practice, the intraocular pressure of a patient needs to be detected in advance, then the intraocular pressure value is multiplied by 110-140% to obtain a positive pressure value to be controlled, then attenuation is considered, the positive pressure value is multiplied by 1.15 to obtain an air pressure value, the external sterile air pressure is adjusted to the air pressure value, then the sterile air is introduced into the positive pressure space, and the flow rate is generally controlled to be 0.2-0.3m/s.
Claims (7)
1. The utility model provides a float and inhale formula eye tissue vitreous body cutting head, includes body (2), and the both ends of body (2) are provided with connecting portion (1) and cutting part (3) respectively, connecting portion (1) are inserting vitreous body cutterbar back, and body (2) take place to wind its central vibration under the drive of external power source to make cutting part (3) accomplish cutting and absorption, its characterized in that to the eye tissue vitreous body: the cutting part (3) is cylindrical, the end part of the cutting part is provided with an arc warping part (301) which horizontally extends towards one side of the cutting part, the upper surface of the arc warping part (301) is provided with a sunken liquid absorbing area (302) which is sunken from the edge to the center, and when the pipe body (2) acts, the cut vitreous humor can cross the edge of the sunken liquid absorbing area (302) and be gathered in the central sunken part of the pipe body; the bottom end of a negative pressure pipette (304) penetrating through the pipe body (2) and the cutting part (3) extends into the lowest part of the concave liquid suction area (302), and sucks the vitreous humor in the concave liquid suction area (302) under the action of negative pressure, a plurality of cutting teeth (306) are arranged in a suction port (305) of the negative pressure pipette (304), and the cutting teeth (306) are distributed irregularly, so that the vitreous humor entering the suction port (305) is cut again; a mounting cavity (307) with a downward opening is formed in the arc warping part (301), and a cutting assembly (4) for cutting the glass body is mounted in the mounting cavity (307);
the edge of the sunken liquid suction area (302) exceeds the projection range of the cutting part (3), and the sunken liquid suction area (302) is in transition fit with the side surface of the cutting part (3) through an arc-shaped slope surface (303);
the outer surface of the concave liquid suction area (302) is arc-shaped, and the connecting line of the highest point and the lowest point of the outer surface forms an included angle of 65-80 degrees with the horizontal plane.
2. The float suction type eye tissue vitreous cutting head according to claim 1, characterized in that: cutting assembly (4) including being used for sealing installation cavity (307) open-ended blade disc (405), and it has a plurality of curved cutting wires (406) that are to distribute at the lower surface of blade disc (405), these cutting wires (406) parallel arrangement, and the height of cutting wires (406) protrusion blade disc (405) lower surface reduces to both sides from the centre gradually, be in the protruding highly minimum cutting wires (406) of both sides edge, its minimum is less than the minimum of arc warpage portion (301), thereby make the lower surface of arc warpage portion (301) organize the contact through cutting wires (406) and eye.
3. The float suction type eye tissue vitreous cutting head according to claim 2, characterized in that: the cutter head (405) is circular, an annular connecting wing plate (407) is arranged around the edge of the cutter head, and the connecting wing plate (407) is clamped into an annular groove in the side wall of a circular fixing ring (408) arranged at the opening edge of the mounting cavity (307).
4. The float suction type vitreous humor cutting head for eye tissue according to claim 2, wherein: the cutter head (405) is driven by external gas power, liquid power or electric power to rotate around the center of the cutter head, and in the rotating process, the cutting wire (406) on the lower surface of the cutter head finishes cutting the vitreous body.
5. The float suction type eye tissue vitreous cutting head according to claim 2, characterized in that: a positive pressure space (403) is formed in the installation cavity (307) through the air supplementing pipe (308) penetrating through the pipe body (2) and the cutting part (3), and the pressure in the positive pressure space (403) is kept at 110-140% of the intraocular pressure of the patient.
6. The float suction type eye tissue vitreous cutting head according to claim 5, wherein: a sealing plate (402) is arranged in a mounting cavity (307) above the cutter head (405), and a power source (401) for driving the cutter head (405) to rotate is arranged at the upper part of the sealing plate (402).
7. The float suction type eye tissue vitreous cutting head according to claim 6, wherein: positive pressure space (403) is formed between the sealing plate (402) and the cutter head (405), a buffer air cavity (404) is arranged in the sealing plate (402), the buffer air cavity (404) is communicated with a sterile air source through an air supplement pipe (308) penetrating through the pipe body (2) and the cutting part (3), air holes communicated with the positive pressure space (403) are formed in the buffer air cavity (404), and sterile air in the buffer air cavity enters the positive pressure space (403) through the air holes so as to ensure that the pressure in the positive pressure space (403) is kept at 110-140% of the intraocular pressure of a patient.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011571813.8A CN112545749B (en) | 2020-12-27 | 2020-12-27 | Float-suction type eye tissue vitreous body cutting head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011571813.8A CN112545749B (en) | 2020-12-27 | 2020-12-27 | Float-suction type eye tissue vitreous body cutting head |
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| CN112545749A CN112545749A (en) | 2021-03-26 |
| CN112545749B true CN112545749B (en) | 2023-01-17 |
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|---|---|---|---|---|
| CN1520791A (en) * | 2003-02-08 | 2004-08-18 | 刘筱铁 | Cornea-cutting operation knife tool |
| CN102186423A (en) * | 2008-09-01 | 2011-09-14 | 尼格尔·莫雷特 | Cutting needle tip for surgical instrument |
| CN102421380A (en) * | 2009-04-07 | 2012-04-18 | 多汉尼眼科研究所 | Disposable handheld phacomorcellation device |
| CN102917657A (en) * | 2010-03-29 | 2013-02-06 | 奈杰尔.莫雷特 | Improved needle tip for surgical instrument |
| CN203290984U (en) * | 2013-05-09 | 2013-11-20 | 湖南康都制药有限公司 | Miscarriage suction tube |
| CN109431680A (en) * | 2018-12-06 | 2019-03-08 | 苏州理想眼科医院有限公司 | A kind of novel high-frequency glass cutting head |
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2020
- 2020-12-27 CN CN202011571813.8A patent/CN112545749B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1520791A (en) * | 2003-02-08 | 2004-08-18 | 刘筱铁 | Cornea-cutting operation knife tool |
| CN102186423A (en) * | 2008-09-01 | 2011-09-14 | 尼格尔·莫雷特 | Cutting needle tip for surgical instrument |
| CN102421380A (en) * | 2009-04-07 | 2012-04-18 | 多汉尼眼科研究所 | Disposable handheld phacomorcellation device |
| CN102917657A (en) * | 2010-03-29 | 2013-02-06 | 奈杰尔.莫雷特 | Improved needle tip for surgical instrument |
| CN203290984U (en) * | 2013-05-09 | 2013-11-20 | 湖南康都制药有限公司 | Miscarriage suction tube |
| CN109431680A (en) * | 2018-12-06 | 2019-03-08 | 苏州理想眼科医院有限公司 | A kind of novel high-frequency glass cutting head |
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| CN112545749A (en) | 2021-03-26 |
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