CN114469510B - Reinforcing puncture system for vitreous body cutting operation - Google Patents
Reinforcing puncture system for vitreous body cutting operation Download PDFInfo
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- CN114469510B CN114469510B CN202210264614.5A CN202210264614A CN114469510B CN 114469510 B CN114469510 B CN 114469510B CN 202210264614 A CN202210264614 A CN 202210264614A CN 114469510 B CN114469510 B CN 114469510B
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- 238000005520 cutting process Methods 0.000 title claims abstract description 32
- 210000004127 vitreous body Anatomy 0.000 title abstract description 18
- 230000003014 reinforcing effect Effects 0.000 title description 2
- 239000007788 liquid Substances 0.000 claims abstract description 167
- 230000005540 biological transmission Effects 0.000 claims abstract description 44
- 230000001681 protective effect Effects 0.000 claims abstract description 42
- 238000005086 pumping Methods 0.000 claims abstract description 36
- 238000001356 surgical procedure Methods 0.000 claims abstract description 8
- 238000000605 extraction Methods 0.000 claims description 54
- 229910000831 Steel Inorganic materials 0.000 claims description 27
- 239000010959 steel Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 24
- 230000009471 action Effects 0.000 claims description 10
- 238000013016 damping Methods 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 2
- 210000003128 head Anatomy 0.000 abstract description 68
- 210000003161 choroid Anatomy 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- 210000001525 retina Anatomy 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000008569 process Effects 0.000 description 20
- 239000000644 isotonic solution Substances 0.000 description 6
- 210000005252 bulbus oculi Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 210000001508 eye Anatomy 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 208000024304 Choroidal Effusions Diseases 0.000 description 2
- 206010038848 Retinal detachment Diseases 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000004410 intraocular pressure Effects 0.000 description 2
- 230000004264 retinal detachment Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000000638 stimulation Effects 0.000 description 2
- 206010008783 Choroidal detachment Diseases 0.000 description 1
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 206010046851 Uveitis Diseases 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004240 ciliary body Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
-
- 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
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- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to the technical field of medical instruments and discloses a reinforced puncture system for vitreous cutting surgery, which comprises a protective sleeve and a protective head, wherein a puncture knife is arranged inside the protective sleeve, and a rotary driving device is arranged inside one end far away from the protective sleeve; and a telescopic liquid pumping device and a telescopic liquid outlet device are respectively arranged inside the protective sleeve and positioned on two sides of the puncture knife. According to the invention, the angular rotation speed of the transmission gear is twice of that of the central gear by setting different gear ratios among the driving gear, the transmission gear and the central gear, so that the initial speed reduction is carried out through gear transmission; and do the secondary through threaded connection with the lift of tool bit and slow down, the extension tool bit extends the number of turns of the required rotatory drive ring of certain distance, and the guarantee tool bit stretches out the demand that the length of protection head satisfies the operation, saves the use of the consumptive material of performing the operation, ensures that this kind of puncture system can satisfy the demand that serious choroid breaks away from type retina and breaks away from the patient and carry out puncture before the vitreous body cutting operation.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a reinforced puncture system for a vitreous cutting operation.
Background
Retinal detachment of the choroid, ciliary body, is a special type and is also more complicated, called choroidal detachment type retinal detachment. The disease is acute in onset and rapid in development, and has severe uveitis and low intraocular pressure. The common treatment mode is vitreous cutting operation treatment, and cutting puncture treatment is carried out on the vitreous body in the operation process, wherein a special vitreous cutting puncture system is required to be used for puncture operation.
The existing vitreous body cutting puncture system is mostly composed of a plurality of puncture knives with different specifications, each puncture knife is fixed in length, and in practical use, if the used puncture knife is not proper in length, the proper puncture knife needs to be replaced, but due to the difference of production specifications and the different actual conditions of eyeballs of patients, the required puncture knives are not consistent in length, so that the proper puncture knife is difficult to find out from the puncture knives with the existing specifications; in addition, in the process of an ophthalmologic puncture operation, isotonic liquid needs to be injected from a puncture part so as to raise and maintain intraocular pressure in the operation process, promote the drainage of the hydrops in the suprachoroidal space and ensure the performance of a vitreous body cutting operation; in the prior art, an extra capillary needle tube is usually adopted for injection, and a large amount of external operation space is occupied while additional lateral puncture is needed, so that inconvenience is brought to the operation process, and the operation is not facilitated for medical staff.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a reinforced puncture system for a vitreous cutting operation, which has the advantages of adjustable extending length of a puncture knife, wider universality, less number of wounds and the like, and solves the problems that the length of the puncture knife is difficult to match with the actual condition and the operation is inconvenient because of extra puncture.
(II) technical scheme
In order to solve the technical problems that the length of the puncture knife is difficult to match with the actual situation and the operation is inconvenient because of extra puncture, the invention provides the following technical scheme: a reinforced puncture system for a vitrectomy surgery comprises a protective sleeve and a protective head, wherein a puncture knife is arranged inside the protective sleeve, and a rotary driving device is arranged inside one end far away from the protective sleeve; a telescopic liquid extracting device and a telescopic liquid discharging device are respectively arranged inside the protective sleeve and positioned on two sides of the puncture knife; the puncture knife is driven to move by the rotary driving device, and the rotary driving device is used for driving and adjusting the distance of the puncture knife extending out of the protection head; the telescopic liquid pumping device and the telescopic liquid draining device can both extend out of the protective head, the telescopic liquid draining device is used for spraying isotonic liquid to the cutting part of the puncture knife, and the telescopic liquid pumping device is used for pumping tissue liquid from an affected part.
Preferably, the puncture knife comprises a knife head, a connecting rod and a driving rod; one end of the connecting rod is fixedly connected with the cutter head, and the other end of the connecting rod is rotatably connected with the driving rod.
Preferably, the rotary driving device comprises a driving ring, a fixing plate, a plurality of transmission gears and a central gear; the fixed plate is fixedly connected with the inner wall of the protective sleeve, and the transmission gears are rotatably connected with the fixed plate through connecting rotating shafts; the central gear is arranged in the center of the fixing plate, and the central gear is rotationally connected with the fixing plate.
Preferably, the inner surface of the driving ring is provided with driving teeth, the driving ring is meshed with a plurality of transmission gears through the driving teeth, and the plurality of transmission gears are meshed with the central gear; the driving ring drives the central gear to rotate through the transmission gear.
Preferably, the gear ratio of the driving gear to the transmission gear is 1; the gear ratio of the transmission gear to the central gear is 1; after transmission through the transmission gear, the rotating speed of the central gear is half of that of the driving ring.
Preferably, the central gear is in threaded connection with the driving rod, and the rotation of the central gear drives the driving rod to lift through the threaded connection; the driving rod drives the cutter head to lift linearly under the action of the protection head.
Preferably, an upper clamping groove is formed in the lower portion of the outer surface of the driving ring, a lower clamping groove is formed in the outer surface, close to the driving ring, of the protective sleeve, and a clamping block is arranged in the lower clamping groove in a sliding mode; the lower clamping groove and the upper clamping groove are matched, the clamping block can slide in the lower clamping groove and the upper clamping groove, and the clamping block is in damping connection with the lower clamping groove and the upper clamping groove; the clamping block is used for locking the rotation of the driving ring when being embedded into the upper clamping groove.
Preferably, the telescopic liquid outlet device comprises a liquid outlet needle, a connecting pipe and a communicating vessel; the liquid outlet needle is of an arc-shaped structure, the liquid outlet needle stretches along with the stretching of the puncture knife, and the liquid outlet end of the liquid outlet needle points to the cutting tip end of the puncture knife; the connecting pipe is soft, two ends of the connecting pipe are respectively connected with the liquid outlet needle and the communicating vessel, and the pipe diameter of the connecting pipe is sequentially increased from one end of the liquid outlet needle to one end of the communicating vessel; the communicating vessel is used for externally connecting isotonic liquid and guiding the isotonic liquid to the inside of the connecting tube.
Preferably, the telescopic liquid pumping device comprises a liquid pumping needle, a liquid pumping pipe, a liquid pumping interface and a limiting assembly; the liquid extraction needle is slidably mounted on one side of the puncture knife through the guide seat, the liquid extraction pipe is soft, two ends of the liquid extraction pipe are respectively connected with the liquid extraction needle and the liquid extraction interface, and the pipe diameter of the liquid extraction pipe is sequentially increased from one end of the liquid extraction pipe to one end of the liquid extraction interface; the liquid extraction interface is used for being externally connected with a liquid extraction device, and tissue liquid is extracted from the needle point of the liquid extraction needle through the liquid extraction device.
Preferably, the limiting assembly comprises a connecting steel cable, a positioning rod and a pulley; the positioning rod is fixedly arranged on the inner wall of the protective sleeve; one end of the connecting steel cable is fixedly connected with the puncture knife, and the other end of the connecting steel cable is fixedly connected with the liquid extraction needle through the mounting seat; a spring is arranged between the guide seat and the mounting seat and sleeved on the liquid drawing needle; the pulley is arranged in the center of the positioning rod, and the connecting steel cable is wound around the pulley; the puncture knife, the connecting steel cable and the total length of the liquid extraction needle are constant, and when the liquid extraction needle extends out of the protective head, the puncture knife is completely retracted into the protective head.
(III) advantageous effects
Compared with the prior art, the invention provides a reinforced puncture system for vitreous body cutting operation, which has the following beneficial effects:
1. this kind of vitreous body cutting operation is with strengthening puncture system, through rotatory drive ring, and give drive gear through driving the tooth with rotatory conduction, rethread drive gear gives sun gear with rotatory conduction, through the threaded connection between sun gear and the actuating lever, the lift of being converted into the actuating lever through threaded connection with sun gear's rotation, the length that the cutter head stretches out the protection head is adjusted, make the cutter head stretch out the demand that length satisfies the operation, save the use of operation consumptive material, ensure this kind of puncture system can satisfy the demand that serious choroid separation type retina breaks away from the patient and carries out puncture before the vitreous body cutting operation.
2. According to the reinforced puncture system for the vitreous body cutting operation, in the length adjustment process of the cutter head extending out of the protective head, under the condition that the number of teeth of the driving gear is the same as that of the transmission gear and under the action of the gear ratio between the transmission gear and the central gear, the angular rotating speed of the transmission gear is twice that of the central gear, so that when the central gear is driven to rotate by the rotating driving ring, the initial speed reduction is carried out, the number of turns of the rotating driving ring required by extending the cutter head for a certain distance is prolonged, the extending and retracting precision of the cutter head is increased, and the extending length of the cutter head is ensured to meet different operation requirements; and the rotation with sun gear is through the lift that threaded connection converts the actuating lever into to do the secondary through threaded connection with the lift of tool bit and slow down, guarantee the flexible precision of tool bit, further ensure that the tool bit stretches out the length that protects the head and satisfies the demand of operation, save the use of operation consumptive material, ensure that this kind of puncture system can satisfy the demand that serious choroid breaks away from type retina and breaks away from the patient and carry out puncture before the vitreous body cutting operation.
3. According to the reinforced puncture system for the vitreous cutting operation, one end of the connecting steel cable is fixed with the connecting rod of the puncture knife, and the other end of the connecting steel cable is fixed with the liquid extraction needle through the mounting seat, so that in the process that the knife head contracts towards the inside of the protection head under the action of the connecting steel cable bypassing the pulley, the length of the connecting steel cable is constant, and the liquid extraction needle extends out of the outer side of the protection head under the action of the spring which is arranged between the guide seat and the mounting seat and is sleeved on the liquid extraction needle, so that tissue liquid is extracted from an affected part through the liquid extraction needle; and because the setting of connecting cable wire and spring for only one of two of drawing liquid needle and tool bit can stretch out the protection head outside, when need use one of them, another can not produce the interference, effectively prevents the damage to the affected part.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a second schematic perspective view of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2 according to the present invention;
FIG. 4 is a schematic view in partial cutaway of the present invention;
FIG. 5 is a schematic view of the internal structure of the present invention;
FIG. 6 is an enlarged view of portion B of FIG. 5 in accordance with the present invention;
FIG. 7 is an enlarged schematic view of section C of FIG. 5 in accordance with the present invention;
FIG. 8 is a perspective view of the puncture blade and the rotation driving means of the present invention;
fig. 9 is a schematic view showing an assembled structure of the puncture knife and the rotary drive device of the present invention.
In the figure: 1. a protective sleeve; 11. a lower clamping groove; 12. a clamping block; 2. a protective head; 3. a puncture knife; 31. a cutter head; 32. a connecting rod; 33. a drive rod; 4. a rotation driving device; 41. a drive ring; 411. a drive tooth; 412. an upper clamping groove; 42. a fixing plate; 43. a transmission gear; 44. a sun gear; 45. connecting the rotating shaft; 5. a telescopic liquid pumping device; 51. a liquid drawing needle; 52. a liquid pumping pipe; 53. a liquid extraction interface; 54. a limiting component; 541. connecting a steel cable; 542. positioning a rod; 543. a pulley; 6. a telescopic liquid outlet device; 61. a liquid outlet needle; 62. a connecting pipe; 63. a communicating vessel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to solve the above technical problems, the present application provides an enhanced lancing system for vitrectomy surgery.
Referring to fig. 1-9, a reinforced puncture system for vitreous cutting surgery comprises a protective sleeve 1 and a protective head 2, wherein a puncture knife 3 is arranged inside the protective sleeve 1, and a rotary driving device 4 is arranged inside one end far away from the protective sleeve 1; a telescopic liquid pumping device 5 and a telescopic liquid outlet device 6 are respectively arranged inside the protective sleeve 1 and at two sides of the puncture knife 3; the puncture knife 3 is driven to move by a rotary driving device 4, and the rotary driving device 4 is used for driving and adjusting the extending distance of the puncture knife 3 from the interior of the protective head 2; the telescopic liquid pumping device 5 and the telescopic liquid outlet device 6 can both extend out of the protection head 2, the telescopic liquid outlet device 6 is used for spraying isotonic liquid to the cutting part of the puncture knife 3, and the telescopic liquid pumping device 5 is used for pumping tissue liquid from the affected part.
Further, referring to fig. 4 to 5 and 8, the puncture knife 3 includes a knife head 31, a connecting rod 32, and a driving rod 33; fixed connection between connecting rod 32 one end and tool bit 31, fixed connection between the connecting rod 32 other end and the actuating lever 33, in addition, puncture sword 3 runs through at the inside central authorities of protective sleeve 1, and protective head 2 sets up the opening that agrees with tool bit 31, through this opening, when providing the route that tool bit 31 stretches out protective head 2, the rotation of restriction tool bit 31, make tool bit 31 when flexible, do not take place to rotate, thereby guarantee the stability of tool bit 31 in flexible and use, and then guarantee the safety of puncture sword 3 in the use.
Further, referring to fig. 8-9, the rotary driving device 4 includes a driving ring 41, a fixing plate 42, a plurality of transmission gears 43 and a central gear 44; the fixed plate 42 is fixedly connected with the inner wall of the protective sleeve 1, and the transmission gears 43 are rotatably connected with the fixed plate 42 through the connecting rotating shaft 45; the sun gear 44 is disposed in the center of the fixed plate 42, and the sun gear 44 is rotatably connected to the fixed plate 42.
The inner surface of the driving ring 41 is provided with driving teeth 411, the driving ring 41 is in gear engagement with a plurality of transmission gears 43 through the driving teeth 411, and the plurality of transmission gears 43 are in gear engagement with the central gear 44; the driving ring 41 drives the sun gear 44 to rotate through the transmission gear 43.
The gear ratio of the driving gear 411 to the transmission gear 43 is 1; the gear ratio of the transmission gear 43 to the sun gear 44 is 1; after transmission through the transmission gear 43, the rotation speed of the sun gear 44 is half of the rotation speed of the drive ring 41.
So that the transmission gear 43 only rotates by the fixed plate 42 and the connecting rotation shaft 45, when the driving ring 41 is rotated, the rotation is transmitted to the transmission gear 43 through the driving tooth 411, and the angular rotation speed of the driving tooth 411 and the transmission gear 43 is equal under the same tooth ratio of the driving tooth 411 and the transmission gear 43, and when the transmission gear 43 transmits the rotation to the central gear 44, the angular rotation speed of the transmission gear 43 is twice of that of the central gear 44 under the tooth ratio of 1.
Further, the central gear 44 is in threaded connection with the driving rod 33, and the central gear 44 rotates to drive the driving rod 33 to lift through the threaded connection; driving lever 33 lift drive tool bit 31 goes up and down straight under protection head 2's effect, thereby pass through the threaded connection between sun gear 44 and the driving lever 33, the rotation with sun gear 44 converts into the lift of driving lever 33 through threaded connection, thereby do the secondary speed reduction with tool bit 31's lift through threaded connection, guarantee the flexible precision of tool bit 31, further ensure that tool bit 31 stretches out the length that protection head 2 satisfies the demand of operation, save the use of operation consumptive material, ensure that this kind of puncture system can satisfy the demand that serious choroid separation type retina breaks away from the patient and carries out puncture before the vitreous body cutting operation.
Further, referring to fig. 2, an upper clamping groove 412 is disposed at the lower portion of the outer surface of the driving ring 41, a lower clamping groove 11 is disposed on the outer surface of the protective sleeve 1 close to the driving ring 41, and a clamping block 12 is slidably disposed inside the lower clamping groove 11; the lower clamping groove 11 and the upper clamping groove 412 are matched, the fixture block 12 can slide in the lower clamping groove 11 and the upper clamping groove 412, and the fixture block 12 is in damping connection with the lower clamping groove 11 and the upper clamping groove 412; the fixture block 12 is used for locking the rotation of the driving ring 41 when being inserted into the upper clamping groove 412, in practical application, scales are etched on the surface of the tool bit 31, the length of the tool bit 31 extending out of the protection head 2 can be accurately known by observing the scales extending out of the protection head 2, so that after the tool bit 31 is driven to extend out to a required length by rotating the driving ring 41, the fixture block 12 is slidably inserted between the lower clamping groove 11 and the upper clamping groove 412 from the inside of the lower clamping groove 11, and the relative rotation between the driving ring 41 and the protection sleeve 1 is locked by the fixture block 12 through damping between the fixture block 12 and the lower clamping groove 11 and the upper clamping groove 412, so that the whole puncture knife 3 is locked, the puncture knife 3 is prevented from moving in the using process, the telescopic rotation of the puncture knife 3 in the operation process and the like is prevented, and the safety of the puncture knife 3 in the operation process is ensured.
Further, referring to fig. 4-7, the telescopic liquid outlet device 6 includes a liquid outlet needle 61, a connecting tube 62 and a communicating vessel 63; the liquid outlet needle 61 is of an arc structure, the liquid outlet needle 61 extends along with the extension and retraction of the puncture knife 3, the liquid outlet end of the liquid outlet needle 61 points to the cutting tip end of the puncture knife 3, and the cutting tip end is the tip end of the knife head 31; the connecting pipe 62 is flexible, two ends of the connecting pipe 62 are respectively connected with the liquid outlet needle 61 and the communicating vessel 63, and the pipe diameter of the connecting pipe 62 is sequentially increased from one end of the liquid outlet needle 61 to one end of the communicating vessel 63; the communicating vessel 63 is used for externally connecting isotonic solution and draining the isotonic solution into the connecting tube 62, in actual use, the liquid outlet needle 61 and the connecting rod 32 are fixed, the liquid outlet needle 61 is driven to move by the movement of the connecting rod 32, the connecting tube 62 is wound on the outer side of the driving rod 33, the connecting tube 62 can still keep the communication between the liquid outlet needle 61 and the communicating vessel 63 when the liquid outlet needle 61 moves, when the puncture cutter head 31 of the puncture knife 3 is used for puncture cutting, the isotonic solution is injected through the liquid outlet needle 61 which synchronously extends and the communicating vessel 63, after the drainage of the connecting tube 62, the isotonic solution is sprayed to the puncture cutting part of the cutter head 31 through the guidance of the liquid outlet needle 61, so that the activity of eyeball cells is maintained in the operation process, the pipe diameter of the connecting tube 62 is gradually increased from one end of the liquid outlet needle 61 to one end of the communicating vessel 63, the pipe diameter of the liquid outlet needle 61 is smaller, the high pressure of the isotonic solution entering the communicating vessel 63 is reduced, the drainage of the isotonic solution is ensured, the stimulation on the eyeball cells is reduced, the incision of the vitreous humor, the vitreous humor is promoted, the incision of the vitreous humor is promoted, and the vitreous humor is increased in the operation process, and the vitreous humor is maintained, and the drainage of the upper cavity is ensured.
Further, referring to fig. 4-6, the telescopic liquid-pumping device 5 includes a liquid-pumping needle 51, a liquid-pumping tube 52, a liquid-pumping connector 53 and a limiting component 54; the liquid extraction needle 51 is slidably mounted on one side of the puncture knife 3 through the guide seat, the liquid extraction pipe 52 is soft, two ends of the liquid extraction pipe 52 are respectively connected with the liquid extraction needle 51 and the liquid extraction interface 53, and the pipe diameter of the liquid extraction pipe 52 is sequentially increased from one end of the liquid extraction pipe 52 to one end of the liquid extraction interface 53; the liquid suction port 53 is used for connecting an external liquid suction device, tissue liquid is extracted from the needle point of the liquid suction needle 51 through the liquid suction device, so that when the telescopic liquid suction device 5 is used, the suction force at the opening of the liquid suction needle 51 is ensured through the pipe diameter of the liquid suction pipe 52 which is sequentially increased from one end of the liquid suction pipe 52 to one end of the liquid suction port 53, and in practical application, the liquid suction pipe 52 is wound on the outer side of the driving rod 33, so that when the liquid suction pipe 52 can move on the liquid suction needle 51, the stable connection between the liquid suction needle 51 and the liquid suction port 53 is still kept, and the stable operation of the tissue liquid extraction process is ensured.
The limiting assembly 54 comprises a connecting steel cable 541, a positioning rod 542 and a pulley 543; the positioning rod 542 is fixedly arranged on the inner wall of the protective sleeve 1; one end of the connecting steel cable 541 is fixedly connected with the connecting rod 32 of the puncture knife 3, and the other end of the connecting steel cable 541 is fixedly connected with the liquid extraction needle 51 through the mounting seat; a spring is arranged between the guide seat and the mounting seat and sleeved on the liquid drawing needle 51; the pulley 543 is installed at the center of the positioning rod 542, and the connecting cable 541 passes around the pulley 543; the total length of the puncture blade 3, the connection cable 541, and the pipette needle 51 is constant, and when the pipette needle 51 is extended out of the protection head 2, the puncture blade 3 is completely received in the protection head 2.
When the puncture needle is used, one end of the connecting steel cable 541 is fixed with the connecting rod 32 of the puncture knife 3, the other end of the connecting steel cable 541 is fixed with the liquid extraction needle 51 through the mounting seat, so that under the action of the connecting steel cable 541 bypassing the pulley 543, in the process that the knife head 31 extends outwards of the protection head 2, the liquid extraction needle 51 contracts towards one end far away from the protection head 2 in the protection sleeve 1; in the process that the cutter head 31 is retracted into the protection head 2, as the length of the connecting steel cable 541 is constant, in the process, the liquid extraction needle 51 extends out of the outer side of the protection head 2 under the action of a spring which is arranged between the guide seat and the mounting seat and is sleeved on the liquid extraction needle 51, so that tissue fluid is extracted from an affected part through the liquid extraction needle 51; and because the arrangement of the connecting steel cable 541 and the spring, only one of the liquid drawing needle 51 and the cutter head 31 can extend out of the outer side of the protection head 2, when the other one needs to be used, the other one does not generate interference, and the damage to the affected part is effectively prevented.
The working principle is as follows: when the puncture scalpel is used, firstly, according to the required length of the puncture scalpel 31 extending out of the protection head 2, the rotation of the rotation driving ring 41 is conducted, the rotation is conducted to the transmission gear 43 through the driving teeth 411, then, the rotation is conducted to the central gear 44 through the transmission gear 43, finally, the rotation of the central gear 44 is converted into the lifting of the driving rod 33 through the threaded connection between the central gear 44 and the driving rod 33, the length of the puncture scalpel 31 extending out of the protection head 2 is adjusted, the length of the puncture scalpel 31 extending out of the protection head 2 can be accurately known through observing scales extending out of the protection head 2, so that after the puncture scalpel 31 is driven to extend out to the required length through the rotation driving ring 41, the fixture block 12 is slidably embedded between the lower clamping groove 11 and the upper clamping groove 412, and through damping between the fixture 12 and the lower clamping groove 11 and the upper clamping groove 412, the relative rotation between the fixture 12 and the driving ring 41 and the protection sleeve 1 is locked, the whole puncture scalpel 3 is locked, and therefore, the puncture surgery can be performed through the puncture scalpel 31, the puncture scalpel 3 can be prevented from moving in the using process, and the scalpel can be safely used in the process.
In the length adjustment process of the cutter head 31 for adjusting the length of the extending protection head 2, under the condition that the gear ratio of the driving gear 411 and the transmission gear 43 is the same, the angular rotating speed of the driving gear 411 and the transmission gear 43 is equal, and under the action of the gear ratio of 1; and through the threaded connection between sun gear 44 and the actuating lever 33, the rotation of sun gear 44 converts the lift of actuating lever 33 into through threaded connection, thereby do the secondary speed reduction through threaded connection with the lift of tool bit 31, guarantee the flexible precision of tool bit 31, further ensure that the length that tool bit 31 stretches out protection head 2 satisfies the demand of operation, the use of the consumptive material of sparingly performing the operation, ensure that this kind of puncture system can satisfy the demand that serious choroid separation type retina breaks away from the patient and carries out puncture before the vitreous body cutting operation.
Simultaneously with the length adjustment process of the cutter head 31 for adjusting the length of the extension protection head 2, the liquid outlet needle 61 is fixed with the connecting rod 32, the liquid outlet needle 61 is driven to move by the movement of the connecting rod 32, the connecting pipe 62 is wound on the outer side of the driving rod 33, the connecting pipe 62 can still keep the communication between the liquid outlet needle 61 and the communicating vessel 63 when the liquid outlet needle 61 moves, so that when the cutter head 31 using the puncture knife 3 is used for puncture cutting, the liquid outlet needle 61 synchronously extending is used, the isosmotic liquid is injected through the communicating vessel 63, after drainage of the connecting pipe 62, the isosmotic liquid is sprayed to the puncture cutting part of the cutter head 31 through the guide of the liquid outlet needle 61, the activity of eyeball cells is maintained in the operation process, the pipe diameter of the connecting pipe 62 is sequentially increased from one end of the liquid outlet needle 61 to one end of the communicating vessel 63, the pipe diameters of the liquid outlet needle 61 and the communicating vessel 61 are smaller, the high pressure of the isosmotic liquid entering the communicating vessel 63 is reduced, the discharge of the isosmotic liquid is reduced, the stimulation to the eye pressure of the eye pressure membrane is maintained, and the eye pressure of the suprameatus is ensured to be discharged.
After the operation is completed by using the scalpel head 31, the scalpel head 31 is retracted into the protection head 2 by reversely rotating the driving ring 41, because one end of the connecting steel cable 541 is fixed with the connecting rod 32 of the puncture knife 3, and the other end of the connecting steel cable 541 is fixed with the liquid extraction needle 51 through the mounting seat, the liquid extraction needle 51 is extended out of the protection head 2 by the action of the connecting steel cable 541 which bypasses the pulley 543 in the process that the scalpel head 31 is retracted into the protection head 2 because the length of the connecting steel cable 541 is constant, so that the tissue liquid is extracted from the affected part through the liquid extraction needle 51 under the action of the spring which is arranged between the guide seat and the mounting seat and is sleeved on the liquid extraction needle 51; and because the arrangement of the connecting steel cable 541 and the spring, only one of the liquid drawing needle 51 and the cutter head 31 can extend out of the outer side of the protection head 2, when the other one needs to be used, the other one does not generate interference, and the damage to the affected part is effectively prevented.
When the telescopic liquid-pumping device 5 is used, the suction force at the opening of the liquid-pumping needle 51 is ensured by the sequentially increasing pipe diameters of the liquid-pumping tube 52 from one end of the liquid-pumping tube 52 to one end of the liquid-pumping connector 53, and in practical applications, the liquid-pumping tube 52 is wound on the outer side of the driving rod 33, so that the liquid-pumping tube 52 can still maintain the stable connection between the liquid-pumping needle 51 and the liquid-pumping connector 53 when the liquid-pumping needle 51 moves, and the stable operation of the tissue fluid extraction process is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a vitreous cutting operation is with strengthening puncture system, includes protective sleeve (1) and protection head (2), its characterized in that: a puncture knife (3) is arranged in the protective sleeve (1), and a rotary driving device (4) is arranged in one end far away from the protective sleeve (1); a telescopic liquid pumping device (5) and a telescopic liquid outlet device (6) are respectively arranged inside the protective sleeve (1) and positioned at two sides of the puncture knife (3); the puncture knife (3) is driven to move by the rotary driving device (4), and the rotary driving device (4) is used for driving and adjusting the distance of the puncture knife (3) extending out of the protective head (2); the telescopic liquid pumping device (5) and the telescopic liquid draining device (6) can extend out of the protective head (2), the telescopic liquid draining device (6) is used for spraying isotonic liquid to the cutting part of the puncture knife (3), and the telescopic liquid pumping device (5) is used for pumping tissue liquid from an affected part; the telescopic liquid pumping device (5) comprises a liquid pumping needle (51), a liquid pumping pipe (52), a liquid pumping connector (53) and a limiting component (54); the liquid extraction needle (51) is slidably mounted on one side of the puncture knife (3) through a guide seat, the liquid extraction pipe (52) is soft, two ends of the liquid extraction pipe (52) are respectively connected with the liquid extraction needle (51) and the liquid extraction interface (53), and the pipe diameter of the liquid extraction pipe (52) is sequentially increased from one end of the liquid extraction pipe (52) to one end of the liquid extraction interface (53); the liquid extraction interface (53) is externally connected with a liquid extraction device, and tissue liquid is extracted from the needle point of the liquid extraction needle (51) through the liquid extraction device; the limiting assembly (54) comprises a connecting steel cable (541), a positioning rod (542) and a pulley (543); the positioning rod (542) is fixedly arranged on the inner wall of the protective sleeve (1); one end of the connecting steel cable (541) is fixedly connected with the connecting rod (32) of the puncture knife (3), and the other end of the connecting steel cable (541) is fixedly connected with the liquid extracting needle (51) through the mounting seat; a spring is arranged between the guide seat and the mounting seat and sleeved on the liquid drawing needle (51); the pulley (543) is installed at the center of the positioning rod (542), and the connecting cable (541) is wound around the pulley (543); the puncture knife (3), the connecting steel cable (541) and the liquid extraction needle (51) are constant in total length, and when the liquid extraction needle (51) extends out of the protective head (2), the puncture knife (3) is completely retracted into the protective head (2).
2. The reinforced piercing system for vitrectomy procedures of claim 1, wherein: the puncture knife (3) comprises a knife head (31), a connecting rod (32) and a driving rod (33); connecting rod (32) one end with fixed connection between tool bit (31), connecting rod (32) the other end with fixed connection between actuating lever (33).
3. The reinforced piercing system for vitrectomy surgery of claim 2, wherein: the rotary driving device (4) comprises a driving ring (41), a fixing plate (42), a plurality of transmission gears (43) and a central gear (44); the fixed plate (42) is fixedly connected with the inner wall of the protective sleeve (1), and the transmission gears (43) are rotatably connected with the fixed plate (42) through connecting rotating shafts (45); the central gear (44) is arranged in the center of the fixing plate (42), and the central gear (44) is rotationally connected with the fixing plate (42).
4. The reinforced piercing system for vitrectomy surgery of claim 3, wherein: the inner surface of the driving ring (41) is provided with driving teeth (411), the driving ring (41) is in gear engagement with a plurality of transmission gears (43) through the driving teeth (411), and the plurality of transmission gears (43) are in gear engagement with the central gear (44); the driving ring (41) drives the central gear (44) to rotate through the transmission gear (43).
5. The reinforced piercing system for vitrectomy procedures of claim 4, wherein: the gear ratio of the driving gear (411) to the transmission gear (43) is 1; the gear ratio of the transmission gear (43) to the central gear (44) is 1; after transmission through the transmission gear (43), the rotating speed of the central gear (44) is half of that of the driving ring (41).
6. The reinforced piercing system for vitrectomy surgery of claim 3, wherein: the central gear (44) is in threaded connection with the driving rod (33), and the central gear (44) rotates to drive the driving rod (33) to lift through the threaded connection; the driving rod (33) drives the cutter head (31) to lift and descend linearly under the action of the protection head (2).
7. The reinforced piercing system for vitrectomy procedures of claim 3, wherein: an upper clamping groove (412) is formed in the lower portion of the outer surface of the driving ring (41), a lower clamping groove (11) is formed in the outer surface, close to the driving ring (41), of the protective sleeve (1), and a clamping block (12) is arranged in the lower clamping groove (11) in a sliding mode; the lower clamping groove (11) is matched with the upper clamping groove (412), the clamping block (12) can slide in the lower clamping groove (11) and the upper clamping groove (412), and the clamping block (12) is in damping connection with the lower clamping groove (11) and the upper clamping groove (412); the fixture block (12) is used for locking the rotation of the driving ring (41) when being embedded into the upper fixture groove (412).
8. The reinforced piercing system for vitrectomy procedures of claim 1, wherein: the telescopic liquid outlet device (6) comprises a liquid outlet needle (61), a connecting pipe (62) and a communicating vessel (63); the liquid outlet needle (61) is of an arc-shaped structure, the liquid outlet needle (61) stretches along with the stretching of the puncture knife (3), and the liquid outlet end of the liquid outlet needle (61) points to the cutting tip end of the puncture knife (3); the connecting pipe (62) is flexible, two ends of the connecting pipe (62) are respectively connected with the liquid outlet needle (61) and the communicating device (63), and the pipe diameter of the connecting pipe (62) is sequentially increased from one end of the liquid outlet needle (61) to one end of the communicating device (63); the communicating vessel (63) is used for externally connecting isotonic liquid and draining the isotonic liquid to the inside of the connecting pipe (62).
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| CN202210264614.5A CN114469510B (en) | 2022-03-17 | 2022-03-17 | Reinforcing puncture system for vitreous body cutting operation |
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| CN202210264614.5A CN114469510B (en) | 2022-03-17 | 2022-03-17 | Reinforcing puncture system for vitreous body cutting operation |
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| CN114469510B true CN114469510B (en) | 2022-10-14 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776238A (en) * | 1971-08-24 | 1973-12-04 | Univ California | Ophthalmic instrument |
| CN113069273A (en) * | 2021-03-30 | 2021-07-06 | 西安市人民医院(西安市第四医院) | Retinal fissure hole scleral surface positioning and subretinal fluid drainage device |
| CN215779111U (en) * | 2021-09-01 | 2022-02-11 | 湖北民族大学附属民大医院 | Adjustable puncture knife for cutting vitreous body |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10299819B2 (en) * | 2016-07-28 | 2019-05-28 | Covidien Lp | Reciprocating rotary surgical cutting device and system for tissue resecting, and method for its use |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3776238A (en) * | 1971-08-24 | 1973-12-04 | Univ California | Ophthalmic instrument |
| CN113069273A (en) * | 2021-03-30 | 2021-07-06 | 西安市人民医院(西安市第四医院) | Retinal fissure hole scleral surface positioning and subretinal fluid drainage device |
| CN215779111U (en) * | 2021-09-01 | 2022-02-11 | 湖北民族大学附属民大医院 | Adjustable puncture knife for cutting vitreous body |
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