CN110013380B - Capsular tension ring implant - Google Patents
Capsular tension ring implant Download PDFInfo
- Publication number
- CN110013380B CN110013380B CN201910363178.5A CN201910363178A CN110013380B CN 110013380 B CN110013380 B CN 110013380B CN 201910363178 A CN201910363178 A CN 201910363178A CN 110013380 B CN110013380 B CN 110013380B
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- China
- Prior art keywords
- tension ring
- implanter
- push rod
- implant
- cavity
- Prior art date
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- 239000007943 implant Substances 0.000 title claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 230000007704 transition Effects 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000002513 implantation Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 5
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 5
- 229920002530 polyetherether ketone Polymers 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims 3
- 238000010926 purge Methods 0.000 claims 1
- 210000003128 head Anatomy 0.000 description 26
- 210000001508 eye Anatomy 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 5
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000004506 ultrasonic cleaning Methods 0.000 description 3
- 239000003599 detergent Substances 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 230000002255 enzymatic effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 208000003322 Coinfection Diseases 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000002159 anterior chamber Anatomy 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000000887 face Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000004402 high myopia Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 201000000245 lens subluxation Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
Landscapes
- 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)
- Prostheses (AREA)
Abstract
The capsular tension ring implant of the present invention has: an implanter body having a cylindrical shape; an implant head mounted at a front end of the implant body, having an internal channel capable of configuring a capsular bag tension ring; a core rod movably mounted in the implant body, at least a rear end portion of the core rod being exposed to the outside of the implant body, the core rod being operable by an operator to move forward in the implant body to push the pocket tension ring out of the implant head, the core rod having a cavity (101) therein, the cavity communicating with an internal passage of the implant head through a space in the barrel of the implant body, and the cavity having an opening at a rear end portion of the core rod exposed to the outside of the implant body. According to the invention, the water injector can be connected to the opening of the cavity of the rod core during cleaning, water is injected into the cavity, and water flows into the inside of the implant main body and the inner channel of the implant head through the cavity and flows out, so that cleaning can be easily performed.
Description
Technical Field
The invention relates to an ophthalmic surgical instrument, in particular to a capsular bag tension ring implanter which can implant a capsular bag tension ring into an affected eye.
Background
The capsular tension ring is generally a compressible open ring that is placed against the capsular bag membrane after implantation to maintain capsular bag tension, prevent posterior capsular bag folds, resist capsular bag shrinkage, and maintain capsular bag integrity. The capsular tension ring is generally circular, oval, rectangular or regular polygonal in cross-section with 2 or more positioning holes for use in treating congenital lens subluxation, preoperative or intraoperative zonule rupture, zonule weakness, and risk of capsular bag collapse by implantation in the capsular bag, particularly in patients with high myopia.
In order to implant the capsular tension ring into the affected eye, the pre-doctor uses forceps for implantation, so that the capsular tension ring implanter (for example, the capsular tension ring implanter disclosed in patent documents 1 and 2) is often clinically used at present, and is usually non-preassembled, and generally consists of a cylindrical implanter body, a push-injection head, a push rod, a spring and the like, wherein the push-injection head is provided with a circular guide tube with a slender arc, the outer diameter is about 1.2mm, and the wall thickness is about 0.2mm. The front end part of the push rod is provided with a thin wire with the diameter of about 0.3mm, the front end of the thin wire is hook-shaped and is used for being matched with the positioning hole of the tension ring of the capsular bag to load the tension ring. The whole product is made of medical metal materials, and is repeatedly used, and the product is required to be subjected to wet heat sterilization treatment before use and then to be cleaned.
However, when the implantation device is used for implantation, the viscoelastic agent and the like can be contacted, the viscoelastic agent enters the guide tube (namely the slender tube of the pushing head), is thin (with the inner diameter of 1.0-1.2 mm), is not easy to clean, cannot be cleaned cleanly, affects the next implantation, is not smooth in pushing, even is blocked, and causes fracture of a tension ring and the like. The method comprises the following steps: a. the guide tube is directly contacted with eyeball tissues, the slender structural space is narrow, and residues such as blood stain, viscoelastic agent and the like are difficult to thoroughly clean after the guide tube is used, so that the risk of secondary infection of a patient is increased; b. residues on the inner wall of the guide tube may cause unsmooth injection of the tension ring, clamping stagnation and even failure of the injection.
Prior art literature
Patent document 1: JP2003527162A
Patent document 2: WO2016191764A1
Disclosure of Invention
Accordingly, it is an object of the present invention to provide a balloon tension ring implanter that is easy to clean.
To achieve the above object, a capsular tension ring implant of the present invention has: an implanter body having a cylindrical shape; an implant head mounted at a front end of the implant body, having an internal channel capable of configuring a capsular bag tension ring; a core rod movably mounted to the implant body such that at least a rear end portion thereof is exposed to the outside of the implant body, the core rod being operable by an operator to move forward in the implant body to push out a pocket tension ring from the implant head, the core rod having a cavity therein, the cavity communicating with an internal passage of the implant head through a space in the barrel of the implant body, and the cavity having an opening at a rear end portion of the core rod exposed to the outside of the implant body.
With the above-described structure, since the cavity is provided in the core rod, the cavity communicates with the internal passage of the implant head through the space in the barrel of the implant body, and the cavity has an opening in the rear end portion of the core rod exposed to the outside of the implant body, it is possible to connect a water injector or the like to the opening in the rear end of the core rod during cleaning, water is injected into the cavity in the core rod, and water flows into the space in the barrel of the implant body communicating with the cavity and flows out through the internal passage of the implant head, thereby making it possible to clean the implant easily.
Preferably, the core rod comprises a push rod and a push pin, the push pin is arranged at the front end of the push rod, the rear end of the push rod is exposed out of the implanter body, and the cavity is formed in the push rod.
In the present invention, preferably, the opening is formed on a rear end surface of the push rod, and is closed by a push rod cap detachably mounted and pushed by an operator.
By adopting the structure, the push rod cap for pushing operation of an operator is utilized to close the opening of the cavity, other parts are not needed to be additionally arranged, the number of parts is reduced, and meanwhile, the structure is simple and the manufacturing cost is low.
In the present invention, the push rod preferably has a push rod body and an adapter port formed at a rear end of the push rod body, and the opening is formed in the adapter port.
With the above configuration, the water injector and the like can be easily connected because the adaptor portion is provided.
In the present invention, the adapter portion is preferably constituted by a large diameter portion having a larger radial dimension than the push rod body.
With the above structure, the size of the switching port part can be larger, so that the connection of the water injector and the like is easier.
In the present invention, preferably, the push rod has a push rod body and a transition connecting portion provided at a front end of the push rod body and having a smaller radial dimension than the push rod body, a water passing hole is provided in a peripheral wall of the transition connecting portion, and the cavity communicates with a space in the cartridge of the implant body via the water passing hole.
By adopting the structure, the cavity in the core rod and the space in the tube of the implant main body are communicated through the water passing hole in the radial direction, the processing is convenient, and the front end surface of the transition connecting part can be connected with other components (such as push pins in the embodiment).
In the present invention, it is preferable that a sliding sleeve is fitted over an outer peripheral surface of a front portion of the push rod, and an outer peripheral surface of the sliding sleeve is in sliding contact with an inner peripheral surface of the implant body.
With the above structure, the abrasion of the push rod can be reduced as compared with the case where the push rod is directly in contact with the inner peripheral surface of the implant body, and in addition, the material of the sliding sleeve can be easily made different from that of the push rod, so that friction is reduced, and the pushing action is smooth.
In the present invention, preferably, the push rod has a push rod body and a transition connecting portion fixed to a front end of the push rod body and having a smaller radial dimension than the push rod body, and the sliding sleeve is mounted to the transition connecting portion.
Preferably, the sliding sleeve is made of PEEK material.
In the present invention, it is preferable that the implant head has an elongated guide tube having an inner passage capable of disposing the bag tension ring and communicating with the space in the tube of the implant body, and a notch capable of accommodating the bag tension ring is provided in a front end surface of the guide tube.
By adopting the structure, as the notch capable of accommodating the bag tension ring is arranged on the front end surface of the guide tube, the bag tension ring can be positioned by the notch, and the controllability and operability of the operation are improved.
Drawings
FIG. 1 illustrates a capsular tension ring implanter in accordance with an embodiment wherein (a) is a side view of the capsular tension ring implanter, (b) is an oblique view thereof, and (c) is an oblique view with a capsular tension ring;
FIG. 2 is a partially enlarged view showing the structure of the implant body and the front end of the push rod of the above-mentioned pocket tension ring implant, wherein (a) is a side sectional view and (b) is a mating portion of the implant body;
Fig. 3 shows a structure of a core rod C, wherein (a) is a side view of the core rod C, (b) and (C) are oblique views, (d) is a side view of a push rod 1 of the core rod C, and (e) is an oblique view of the push rod 1;
The situation where the water injector is connected to the capsular tension ring implant is shown in fig. 4;
fig. 5 shows the structure of the implant head in an embodiment, wherein (a) is a side view and (b) and (c) are oblique views;
FIG. 6 shows the structure of the inner barrel, wherein (a) is a side view of the inner barrel, and (b) and (c) are oblique views;
Fig. 7 shows the structure of the outer tube and the grip portion assembled together, wherein (a) is a side view, and (b) and (c) are oblique views;
Fig. 8 is an explanatory view for explaining an operation of loading the bag tension ring, in which (a) a connection manner of the micro hooks on the push pins and the eyelets on the bag tension ring is shown, (b) an erroneous mounting manner is shown, and (c) a correct mounting manner is shown.
Description of the reference numerals
100. A capsular tension ring implanter; A. an implanter body; 2. an inner cylinder; 3. an outer cylinder; B. an implant head; 5. an inner cylinder connector; 12. a guide tube; C. a core bar; 1. a push rod; 6. a push rod cap; 8. a sliding sleeve; 13. pushing needles; 16. a spring; 14. an adapter port; 200. a capsular bag tension ring; 300. a water injector.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 1 shows a capsular tension ring implanter 100 in accordance with an embodiment wherein (a) is a side view of the capsular tension ring implanter, (b) is an oblique view thereof, (c) is an oblique view with a capsular tension ring 200, and a portion of the capsular tension ring has not yet been pushed out of the capsular tension ring implanter. Fig. 2 is a view showing an internal structure of the capsular tension ring implanter, wherein (a) is a side sectional view, and (b) is a partially enlarged view of a portion of the front end of the push rod in (a) which is engaged with the main body of the implanter.
As shown in fig. 1 and 2, the pocket tension ring implanter 100 (hereinafter, also simply referred to as implanter 100) includes an implanter body a, an implanter head B and a core rod C, the implanter body a is in an elongated tubular shape as a whole, the implanter head B is fixedly mounted at one end of the implanter body a, the core rod C is slidably mounted inside the implanter body a, and a part of the core rod C protrudes from an end (other end) of the implanter body a opposite to the end where the implanter head B is mounted in a normal state (in an unused state).
For convenience of description, in the following description, the side of the implant head B is the front side (and also the front side of the movement direction of the core rod during the injection), and the side of the exposed portion of the core rod C is the rear side, and the positional relationship between the respective components refers to the positional relationship of the capsular tension ring implanter 100 in the non-use state unless otherwise specified.
When using the capsular tension ring implanter 100, the operator pushes the mandrel C forward, sliding it forward within the implanter body a, thereby pushing the capsular tension ring 200 (sometimes also referred to simply as tension ring 200) into the affected eye via the implantation head B.
The respective structural elements of the capsular tension ring implanter 100 are described in detail below.
< Implanter body A >
The implant body A has an inner tube 2, an outer tube 3 fitted over the inner tube 2, and a grip portion 4 fitted over the outer tube 3. In the present embodiment, the inner tube 2, the outer tube 3 and the grip portion 4 are all made of metal materials, and are fastened together by rivets. Alternatively, they may be welded together.
Fig. 6 shows the structure of the inner tube 2, wherein (a) is a side view of the inner tube 2, and (b) and (c) are oblique views.
As shown in fig. 6, the inner tube 2 is a hollow tube body with both ends open, and is made of medical stainless steel material. The pipe wall of the inner cylinder 2 is provided with an avoidance hole 2a, a guide groove 2b, a rivet hole 2c and a rivet hole 2d. Wherein, the avoiding hole 2a is positioned at the rear end and corresponds to a mounting hole for mounting the pin 11 on the push rod 1; the guide groove 2b is disposed on a peripheral wall portion facing the escape hole 2a, extends in the axial direction, and is engaged with a guided portion 11a of the push rod 1 to be described later; the rivet hole 2c is used for allowing a rivet for fastening the inner cylinder 2, the outer cylinder 3 and the holding part 4 to pass through; the pair of rivet holes 2d are arranged to be opposed to each other in the radial direction, and are penetrated by rivets 5a1 for attaching the implant head 1 to the inner tube 2, which will be described later.
Fig. 7 shows a structure of the outer tube 3 and the grip portion 4 assembled together, wherein (a) is a side view, and (b) and (c) are oblique views.
As shown in fig. 7, the outer tube 3 is a tube body with both ends open, and is fitted over the outer side of the inner tube 2as shown in fig. 1 and 2. The outer cylinder 3 is made of medical stainless steel, and the specific material of the outer cylinder can be the same as that of the inner cylinder 2 or different from that of the inner cylinder. A flange-shaped grip portion 4 is attached to the outer tube 3, and the grip portion 4 has a cylindrical portion 4a, specifically, the cylindrical portion 4a is fitted over the outer tube 3. The cylindrical portion 4a is provided with a rivet hole 4a1, and the rivet hole 4a1 is provided for passing a rivet for fastening the inner tube 2, the outer tube 3, and the grip portion 4 together.
< Implant head B >
Fig. 5 shows a structure of an implant head B in this embodiment, in which (a) is a side view, and (B) and (c) are oblique views.
As shown in fig. 5, the implant head B has an inner cylinder connector 5 and a guide tube 12 fixed on the inner cylinder connector 5, and in this embodiment, both the inner cylinder connector 5 and the guide tube 12 are made of medical stainless steel. The inner tube connector 5 has a cylindrical portion 5a and a frustum-shaped portion 5b having a larger diameter than the cylindrical portion 5a, and the cylindrical portion 5a is inserted into the front end of the inner tube 2 and fixed to the inner tube 2 by a rivet 5a 1.
As shown in fig. 2, the rear end of the inner tube 2 is fitted over the outer side of the front end of the push rod 1, and the front end of the inner tube 2 is fitted to the cylindrical portion 5a shown in fig. 5. More specifically, the front end of the inner tube 2 and the cylindrical portion 5a are provided with holes (rivet holes 2c in the inner tube 2) that are aligned with each other, and the inner tube 2 and the inner tube connector 5 are fastened together by being engaged with the holes via rivets 5a 1.
The guide tube 12 is an elongated tube, and penetrates the inner tube connector 5 in the front-rear direction, so that the guide tube 12 communicates with the space inside the inner tube 2, and the tip end of a push pin 13 described later extends into the guide tube 12.
In addition, in the present embodiment, the front end portion of the guide tube 12 is curved so as to guide the pouch tension ring 200. In this embodiment, the length is 20-50mm.
In addition, in the present embodiment, a U-shaped notch 12a recessed rearward is formed in the end surface of the front end of the guide tube 12, and the diameter direction passing through the notch 12a is perpendicular to the opening direction of the micro hook 13a (fig. 8) at the front end of the push pin 13, or the diameter direction of the notch 12a is perpendicular to the axial direction of the bag tension ring 200 when the micro hook 13a hooks the eyelet 201 of the bag tension ring 200 (see fig. 8). When the bag tension ring 200 is loaded on the guide tube 12 and pushed out from the guide tube 12, a part of the bag tension ring 200 is placed (accommodated) in the notch 12a, so that the bag tension ring 200 can be positioned through the notch 12a to limit the pushing-out direction or the moving direction of the bag tension ring 200, the bag tension ring 200 is prevented from shaking in the pushing-out process, and the pushing-out stability is ensured.
In use, the miniature hook 13a is perpendicular to the notch 12a of the head of the guide tube 12 when the push pin 13 is pushed out, and the miniature hook 13a always faces to the right. The capsular tension ring implanter 100 should be well-fitted with a capsular tension ring, which is convenient to install and reliable in positioning; the micro-hooks 13a can easily grasp the left eye of the bag tension ring, and smoothly draw in and draw out the bag tension ring along its own curve in the same plane, so that the bag tension ring 200 can be smoothly drawn in and out, and is easily separated from the push pin 13 after being completely pushed out.
< Core rod C >
As shown in fig. 2, the core bar C is constituted by a push rod 1, a push pin 13 (push member) fixed to the front end of the push rod 1, a push rod cap 6 detachably attached to the rear end of the push rod 1, and the like. The front end of the push rod 1 extends into the tube of the inner tube 2 from the rear, and the push pin 13 is disposed in the space in the inner tube 2. A spring 16 is disposed between the push rod 1 and the inner cylinder connector 5 of the implant head a, and the spring 16 applies a rearward force to the push rod 1, so that the core rod C moves forward against the force of the spring 16 when the operator performs a pushing operation.
Fig. 3 shows the structure of the core rod C, wherein (a) is a side view of the core rod C, (b) and (C) are oblique views, (d) is a side view of the push rod 1 of the core rod C, and (e) is an oblique view of the push rod 1.
As shown in fig. 2 and 3, the putter 1 includes a putter body 17, a junction portion 14 formed at the rear end of the putter body 17, and a transition connection section 15 provided at the front end of the putter body 17. The radial dimensions of the push rod main body 17, the transition connecting section 15 and the push needle 13 are sequentially reduced, so that a step end face (namely the front end face of the push rod main body 17) is formed at the joint of the front end of the push rod 1 and the transition connecting section 15. A sliding sleeve 8 made of PEEK material is arranged on the transitional connecting section 15, the sliding sleeve 8 is cylindrical, and the outer peripheral surface of the sliding sleeve is in sliding contact with the inner peripheral surface of the inner cylinder 2, so that friction force between the push rod 1 and the inner cylinder 2 can be reduced, and the push rod 1 can move more smoothly in the injection process.
In the present embodiment, the position of the sliding sleeve 8 in the front-rear direction is set so that the rear end surface thereof contacts the stepped end surface (i.e., the front end surface of the push rod main body 17).
The spring 16 is sleeved on the push pin 13 and the transitional connecting section 15, and the rear end of the spring 16 is abutted against the front end face of the sliding sleeve 8, namely, the spring 16 is compressed between the sliding sleeve 8 and the inner cylinder connector 5 of the implantation head B, and the push rod 1 is forced through the sliding sleeve 8.
In addition, as shown in fig. 3, a sleeve fixing hole 15b is provided on the peripheral wall of the transition piece 15 at a position close to the push rod main body 17, and a rivet 8a sequentially passes through the sliding sleeve 8 and the sleeve fixing hole 15b to fix the sliding sleeve 8 on the transition piece 15. And the rear end thereof abuts at the second step portion.
In addition, in the present embodiment, the push rod main body 17 is formed separately from the transition connecting section 15, and both are fixed together by welding. In addition, the push pin 13 is also fixed to the transition piece 15 by welding.
A pair of radially penetrating mounting holes are formed in the push rod 1 (near the push rod gasket 8), a pair of PEEK pins 11 are swaged to the mounting holes, and the same end portions of the pins 11 are extended from the outer surface of the push rod 1 to form guided portions 11a, and the guided portions 11a extend into guide grooves 2b in the inner cylinder 2 and are guided by the guide grooves 2b, so that the pushing operation of the push rod 1 is kept in a stable direction, and the push rod 1 is prevented from rotating relative to the inner cylinder 2. When the guided portion 11a moves to the tip of the guide groove 2b, the guide groove 2b blocks the core bar (the push rod 1, the push pin 13) from moving forward, that is, the guide portion 11a and the guide groove 2b together form a stopper mechanism.
As described above, the inner cylinder 2 is provided with the escape hole 2a, and when the implanter is assembled, the escape hole 2a is aligned with the mounting hole of the push rod 1 for mounting the pin 11, so that the pin 11 is conveniently mounted on the push rod 1.
The push rod main body 17 and the transition connecting section 15 are both made of hollow cylindrical medical stainless steel members, and form a cylindrical structure with an open rear end and a closed front end, namely, a cavity 101 is formed in the push rod 1, the rear end of the cavity 101 is opened by a transfer port part 14 (the rear end of the transfer port part 14 is opened, or the cavity 101 is provided with an opening on the rear end face of the push rod 1), and a push rod cap 6 made of PEEK is detachably mounted on the transfer port part 14 to seal the cavity 101.
A water passing hole 15a is formed on the transition connecting section 15, and the water passing hole 15a enables the cavity 101 in the push rod main body 17 and the transition connecting section 15 to be communicated with the space in the inner cylinder 2. In the present embodiment, a pair of water passing holes 15a are provided, which are disposed opposite to each other, that is, at an angle of 180 degrees. In addition, other numbers of water passing holes may be provided at equal intervals in the circumferential direction.
The adapter opening 14 formed at the rear end of the push rod body 17 of the push rod 1 is larger than the diameter of the push rod body 17 so as to be connected to the water injector 300 or the like (fig. 4). When the tension ring implanter 100 is cleaned, as shown in fig. 4, the push rod cap 6 is removed, the water injector is connected to the tension ring implanter 100 through the connection port 14, water is injected into the cavity 101 of the push rod 1, and water enters the inner cavity of the inner cylinder 2 through the water passing hole 15a and flows out through the guide tube 12, so that flushing can be performed.
In addition, in this embodiment, the pusher cap 6 is colored differently from the pusher 1, the implanter body a to indicate to the operator that the pusher cap 6 is removable, e.g., the pusher 1, the implanter body a is blue and the pusher cap 6 is beige in color.
< Cleaning method >
The method of cleaning the tension ring implant 100 described above is described below.
1. Conventional cleaning
1.1 The capsular tension ring implanter should be cleaned immediately before and after the initial use, and in particular, the implanter tubing should be cleaned of residues.
1.2. The external residue was wiped off with a wet cloth.
1.3. The portion of the implant tube prior to position a was completely immersed in the ultrasonic cleaning solution for ultrasonic cleaning for 1 minute. The implanter is operated in a simulated use motion such that the miniature hooks are also exposed to the ultrasonic cleaning fluid.
1.4 The off-white push rod cap 6 (rod plug) at the rear of the push rod is removed and the injector is attached to the implanter through an adapter. The implanter is rinsed with distilled water for about 1 minute (see fig. 5) or connected to the washer disinfector port. The beige stem plug must also be cleaned in a suitable container. After the implanter is cleaned, the implanter is dried by compressed air. Ensuring that no moisture remains in the implanter.
1.5 Reinstalling the sterilized beige stem plug on the implanter push rod.
2. Pre-cleaning
If there are a lot of residues left in the implanter tube, we propose to wash with 0.3% H2O2 first, leave it for 5 minutes and then rinse with clean water. The specific operation method comprises the following steps: after 5 minutes of standing using a 20mL disposable syringe with 0.3% H2O2 (see FIG. 6), the mixture was rinsed with clear water for about 1 minute, after which the washing was completed according to a conventional washing method.
In addition, although the materials of the components of the capsular tension ring implant 100 are compatible with enzymatic cleaners and detergents, it is desirable not to use enzymatic cleaners and detergents because if enzymes and cleaners on ophthalmic surgical instruments are not properly cleaned and removed, it may result in the anterior chamber toxic reaction syndrome (TASS).
As described above, in the bag tension ring implanter 100 of the present embodiment, water is injected into the push rod 1 by the water injector 300 during cleaning, and water flows out of the guide tube 12 through the space in the inner tube 2, thereby facilitating cleaning.
Specifically, the capsular tension ring implanter 100 of the present embodiment has an implanter body a which is cylindrical; an implant head B mounted on the front end of the implant body a, having an internal channel (the conduit of the guide tube 12) in which the pocket tension ring 200 can be disposed; a stem C (including a push rod 1 and a push pin 13) movably attached to the implant body a, at least a rear end portion (rear end portion of the push rod 1) of which is exposed to the outside of the implant body a, and operable by an operator to move forward in the implant body a to push the capsular bag tension ring 200 out of the implant head B (by the push pin 13). The core rod C (push rod 1) has a cavity 101 inside, the cavity 101 communicates with the internal passage (the pipe of the guide pipe 12) of the implant B through the space inside the tube of the implant body a (the space inside the tube of the inner tube 2), and the cavity 101 has an opening (the rear end opening of the transit opening 14) at the rear end portion of the core rod C exposed to the outside of the implant body a.
Therefore, at the time of cleaning, the water injector or the like can be connected to the opening at the rear end of the core rod C, water can be injected into the cavity 101 in the core rod C, and water flows into the space in the cartridge of the implant body a communicating with the cavity 101 and flows out through the internal passage of the implant head B, so that cleaning can be easily performed.
< Installation of capsular tension ring and bolus >
1. In this embodiment, the capsular tension ring implanter 100 is configured to operate the implanted capsular tension ring 200 in a clockwise direction.
2. The open portion of the capsular tension ring 200 is brought into direct opposition to the operator, at which time the push rod 1 of the capsular tension ring implanter 100 is depressed (via the push rod cap 6) to expose the miniature hooks 13a of the heads of the push pins 13. Hooking the left eye 201 of the capsular tension ring 200 with the micro-hooks 13a (not the right eye, see fig. 8 (b) and (c), (b) being in the wrong way and (c) being in the correct way) effectively ensures that the capsular tension ring 200 is placed in the opening 12 a.
3. Ensure that the push pin micro-hooks extend into the eyelet, rather than out of the eyelet or behind it (see fig. 8 (a)). After the push-pin micro hook 13a is determined to be in the eyelet 201, the push-pin may be slowly released. This pulls the capsular tension ring 200 along its own curve into the canal of the guide tube 12.
4. The push rod 1 is not placed too fast as this would cause the bag tension ring 200 to be pulled too fast into the guide tube 12, possibly resulting in damage to the eyelet 201 of the bag tension ring 200. The push rod 1 can be completely released only when the bag tension ring 200 is pulled completely into the guide tube 12 channel. At this point, the capsular tension ring 200 is ready for implantation into the capsular bag.
5. The capsular tension ring implanter 100 is aligned with the incision site of the affected eye so that the capsular tension ring 200 may be accessed into the capsular bag. The capsular tension ring 200 is implanted into the capsular bag by applying pushing force to the pushrod 1 of the capsular tension ring implanter 100, allowing the capsular tension ring 200 to slowly move clockwise, naturally advancing along the capsular bag curve. The capsular tension ring 200 is released from the miniature hooks 13a on the push pins 13 of the capsular tension ring implanter 100 only when the capsular tension ring 200 is fully implanted.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
For example, in the above embodiment, the inner tube 2, the outer tube 3, the push rod 1, the guide tube 12, and the like are made of stainless steel materials, but the present invention is not limited thereto, and may be made of titanium or an alloy thereof, for example.
In addition, the adaptor opening 14 may be changed to various forms, for example, in the above embodiment, the adaptor opening 14 is formed to be larger than the diameter of the push rod main body 17, and the connection is achieved by inserting the joint of the water injector into the adaptor opening 14, however, the connection may be achieved by inserting the adaptor opening 14 into the joint of the water injector; for another example, in the above embodiment, the adapter 14 is circular, but may be square.
In the above embodiment, the cavity 101 in the putter 1 is closed by the putter cap 6, and the putter cap 6 is removed during cleaning, but the present invention is not limited to this, and for example, the putter cap 6 may be directly perforated, and the syringe may be attached to the putter cap 6 during cleaning.
In addition, in the above embodiment, the push rod main body 17 and the transition connecting section 15 are formed separately and fixed together by welding, however, both may be integrally formed. In the above embodiment, the push pin 13 and the push rod 1 are formed separately and fixed together by welding, but the push pin 13 and the push rod may be formed integrally (the push pin 13 and the transition piece 15 are formed integrally, or the push pin 13, the transition piece 15 and the push rod body 17 are formed integrally).
In the above-described embodiment, the mode of providing the water passing holes 15a (through holes) on the outer peripheral surface of the transition piece 15 is exemplified as the mode of communicating the cavity 101 inside the push rod 1 with the space inside the barrel of the implant body 2, but the present invention is not limited to this, and for example, a plurality of water passing holes may be provided on the front end surface of the transition piece 15 and distributed uniformly on the circumference.
Claims (11)
1. A capsular tension ring implanter for implanting a capsular tension ring into an affected eye, reusable, comprising:
an implanter body (a) having a cylindrical shape;
An implant head (b) mounted at the front end of the implant body (a) and having an internal channel capable of disposing a capsular tension ring (200);
a core bar movably mounted to the implant body (a) such that at least a rear end portion thereof is exposed to the outside of the implant body (a), the core bar being operable by an operator to move forward in the implant body (a) to push out a pocket tension ring (200) from the implant head (b),
It is characterized in that the method comprises the steps of,
The inside of the core rod is provided with a cavity (101), the cavity (101) is communicated with the internal channel of the implantation head (b) through the cylinder space of the implanter body (a), the cavity (101) is provided with an opening at the rear end part of the core rod exposed out of the implanter body (a), the cavity (101) can be filled with cleaning liquid, and the cleaning liquid enters the cylinder space communicated with the cavity (101) and flows out through the internal channel, so that the capsular tension ring implanter is cleaned.
2. The capsular tension ring implanter of claim 1,
The core bar comprises a push rod (1) and a push pin (13), the push pin (13) is arranged at the front end of the push rod (1), the rear end of the push rod (1) is exposed out of the implanter main body (a), and the cavity (101) is formed in the push rod (1).
3. The capsular tension ring implanter of claim 2,
The opening is formed on the rear end face of the push rod (1), and is closed by a push rod cap (6) which is detachably installed and is pushed by an operator.
4. A capsular tension ring implanter according to claim 3, wherein the pushrod (1) has a pushrod body (17) and a transit opening (14) formed at a rear end of the pushrod body (17), the opening being formed at the transit opening (14).
5. The capsular tension ring implanter according to claim 4, wherein the adapter mouth (14) is constituted by a large diameter portion having a larger radial dimension than the push rod body (17).
6. The capsular tension ring implanter of claim 2,
The push rod (1) is provided with a push rod main body (17) and a transition connecting part (15) which is arranged at the front end of the push rod main body (17) and has smaller radial dimension than the push rod main body (17),
A water passing hole (15 a) is formed in the peripheral wall of the transition connecting part (15), and the cavity (101) is communicated with the space in the barrel of the implant main body (a) through the water passing hole (15 a).
7. The capsular tension ring implanter according to claim 2, wherein a sliding sleeve (8) is fitted over the outer circumferential surface of the front portion of the push rod (1), the outer circumferential surface of the sliding sleeve (8) being in sliding contact with the inner circumferential surface of the implanter body (a).
8. The capsular tension ring implanter of claim 7, wherein the pushrod has a pushrod body (17) and a transition connection portion (15) fixed to a front end of the pushrod body (17) and having a smaller radial dimension than the pushrod body,
The sliding sleeve (8) is arranged on the transition connecting part (15).
9. The capsular tension ring implanter according to claim 7 or 8, wherein the sliding sleeve (8) is made of PEEK material.
10. The capsular tension ring implanter of any of claims 1-8,
The implant head having an elongated guide tube (12), the guide tube (12) having an internal channel capable of deploying a capsular tension ring (200) and communicating with the intra-cartridge space of the implant body (a),
The front end face of the guide tube (12) is provided with a notch (12 a) which can accommodate the bag tension ring.
11. The capsular tension ring implanter of any of claims 1-8, wherein the purging liquid comprises clear water or a hydrogen peroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363178.5A CN110013380B (en) | 2019-04-30 | 2019-04-30 | Capsular tension ring implant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910363178.5A CN110013380B (en) | 2019-04-30 | 2019-04-30 | Capsular tension ring implant |
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| CN110013380A CN110013380A (en) | 2019-07-16 |
| CN110013380B true CN110013380B (en) | 2024-11-15 |
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| CN201910363178.5A Active CN110013380B (en) | 2019-04-30 | 2019-04-30 | Capsular tension ring implant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112773597B (en) * | 2019-11-08 | 2025-02-14 | 爱博诺德(北京)医疗科技股份有限公司 | Pre-installed bladder bag tension ring pusher, pre-installed bladder bag tension ring and bladder bag tension ring pre-installation method |
| CN111529127B (en) * | 2020-04-27 | 2025-07-22 | 复旦大学附属中山医院厦门医院 | Intraocular lens capsular bag injector and intraocular lens capsular bag injection assembly |
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