CN203749683U

CN203749683U - Hand-operated cataract lens extractor

Info

Publication number: CN203749683U
Application number: CN201420047642.2U
Authority: CN
Inventors: 傅顺杰; 傅祖耀
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-01-24
Filing date: 2014-01-24
Publication date: 2014-08-06
Anticipated expiration: 2024-01-24

Abstract

The utility model provides a hand-operated lens extractor for use in small-incision cataract surgery. The hand-operated lens extractor comprises an outer casing, a cutting unit and a pushing-extruding unit, wherein a probe provided with an olecranon hook and tiger teeth is arranged at the front end of the outer casing; a flushing chamber is formed in the outer casing close to the probe; the cutting unit is provided with a hollow casing and a hollow cutting needle positioned at the front end of the hollow casing; a central through strip is arranged on the pushing-extruding unit. Through mechanical fitting of the outer casing, the cutting unit and the pushing-extruding unit, the function of easily and safely extracting cataract lenses are realized.

Description

Manual type cataract crystalline lens acquisition device

Technical field

This utility model has about a kind of and utilizes manual thrust, makes the motion of working in coordination of a probe and a hollow cutting needle, reaches the device of crystalline lens acquisition object.

Background technology

Cataract is a kind of chronic disease of eyes, its crystalline lens ageing deterioration and cause the muddy sclerosis of crystalline lens, and light can not penetrate completely, image is dropped clear not in the time of retina, cause blurred vision, have astigmatism if add patient's cornea, the situation of blurred vision can be more serious.

Current cataract operation method can roughly be divided into following two kinds:

(1) front capsule excision cataract lens extraction merges rigid intraocular lens implant surgery, its method is to do the lateral penetration cutting of 5～6mm near wheel portion or marginal zone at cornea upper limb, by front capsule excision, and the extruding of cataract crystal is got rid of, utilize flushing liquor that residual substance is drawn clean, rigid intraocular lens is implanted, then, the stitching of making 5 to 6 pins with nylon wire completes operation again.The benefit of this operation is: apparatus is simple, and material is cheap, and step is easy to learn.Its shortcoming has 1. operative incisions larger, and the postoperation recovery time is longer, and foreign body sensation is more obvious.2. wound need to be sewed up 5 to 6 pins, easily causes postoperative artificial astigmatism, more undesirable to vision restoration.3. need to wear astigmatism glasses or carry out secondary corneal astigmatism corrective procedure, increase patient and medical personnel's burden and pressure.

(2) small incision cataract crystal emulsion merges folding type or the operation of pouring-in film intraocular lens, its method is to make the long horizontal main otch of 2mm to 3mm near the marginal zone diamond cutter of cornea upper limb, for ultrasound cataract emulsifying probe turnover entrance, and make the auxiliary incision of horizontal 1mm to 2mm in the corresponding marginal zone apart from 60 ° to 120 °, main otch, be used for rotating and peeling off cataract crystal.This operation method utilizes ultrasound scanner head by shatter cataract crystal emulsifying, middle by the sucking-off of emulsifying fragment by probe again, then soft folding or injection type artificial lens crystallina are inserted to mother crystal position, then otch is made to 1 pin with suture and sew up or without stitching, determine according to corneal incision compactness.This method benefit has: the time is short, and operation is fast, and wound is little, and foreign body sensation is few, and vision restoration is fast, but shortcoming has: intraocular lens eyeglass price is more expensive, needs to use ultrasound machine and senior operating microscope, apparatus expensive, and consumptive material is more, and learning time is long etc.

Utility model content

The inventor is because above-mentioned existing operation and material shortcoming, so the idea of thinking and creating is begged for and revised after improvement through in many ways collecting, adopting, are released this utility model eventually.

This utility model provides a kind of manual type cataract crystalline lens acquisition device, it comprises: a trocar sheath, be hollow form, this trocar sheath front end extends and is provided with a tubular probe that dwindles footpath, this probe front end is provided with an olecranon hook, this trocar sheath is inner is provided with a developing room near this probe place, the tube wall of this trocar sheath is to being provided with a water inlet and an outlet in developing room place, this water inlet and outlet communicate with this developing room respectively, one cutter unit, be mounted in trocar sheath, there is the hollow cutting needle that a hollow sleeve and is positioned at hollow sleeve front end, on this hollow sleeve, be combined with an impeller that can drive this hollow sleeve and the displacement of hollow cutting needle, this hollow cutting needle can be set in the probe of this outer tube body, and front end can extend the olecranon hook place of probe, and one push unit, there is a center poker, this center poker is arranged in the hollow cutting needle of cutter unit, Qie Gai center poker front end is positioned at the developing room the inside of trocar sheath.

Preferably, the probe front end of this trocar sheath is separately provided with two relative Dens Tigris.

Preferably, this trocar sheath is inner is provided with a waterproof plug near this probe place, and this developing room is by being separated to form between this waterproof plug and probe.

Preferably, this trocar sheath rear end is in conjunction with the female capping of a tool, and this center poker of pushing unit is incorporated into a screw front end, this screw rod be provided with for the external screw thread of the internal screw-thread screw of this capping.

Preferably, this spiro rod rear end of pushing unit convexedly stretches in trocar sheath outside, and is provided with a knob that is used for operating screw rod rotation.

Preferably, the tube wall stage casing of this trocar sheath is provided with a slotted hole vertically, and this slotted hole rear end is provided with locating slot, and the impeller of this cutter unit convexedly stretches in trocar sheath outside by this slotted hole.

Preferably, the hollow sleeve internal sleeve of this cutter unit is provided with a spring, and this center poker of pushing unit is incorporated into a screw front end, the butted hollow sleeve interior forward end in cutter unit of this spring and pushing between the screw front end of unit.

Compared with prior art the beneficial effects of the utility model are:

1, it can carry out little incision cataract operation, and operating procedure is simple, and material application is economical, and safety is easy to learn, does not increase learning burden to surgical doctor.

2, when it carries out cataract operation, utilize olecranon hook and the Dens Tigris of probe that crystal is fixed, utilize hollow cutting needle to cut and bring to developing room, cooperation center poker is pushed discharge, therefore utilize simple theory of mechanics, three-in-one working in coordination, and can reach good operation quality, greatly reduce surgical apparatus, space and funds.

Brief description of the drawings

Fig. 1 is the three-dimensional exploded view of embodiment of the present utility model.

Fig. 2 is the external structure axonometric chart of embodiment of the present utility model.

Fig. 3 is the profile of embodiment of the present utility model.

Fig. 4 is the schematic diagram that carries out cataract operation of embodiment of the present utility model.

Fig. 5 is the action schematic diagram of the acquisition cataract crystal of embodiment of the present utility model.

Fig. 6 is the action schematic diagram that the acquisition cataract texture of embodiment of the present utility model is discharged by outlet.

Fig. 7 is the action schematic diagram of the poker position, adjustment center of embodiment of the present utility model.

Main Reference numeral

1 trocar sheath

11 probes

111 olecranon hooks

112 Dens Tigris

12 waterproof plugs

13 developing rooms

14 water inlets

15 outlets

16 cappings

161 female threads

17 slotted holes

171 locating slots

2 cutter units

21 hollow sleeves

22 hollow cutting needles

23 impellers

24 springs

3 push unit

31 screw rods

311 external screw threads

312 knobs

32 center pokers

A cornea

A1 otch

B anterior chamber

C cataract crystal

Detailed description of the invention

Below will be with specific embodiment, and by reference to the accompanying drawings the manual type cataract crystalline lens acquisition device of embodiment of the present utility model is elaborated, but not as to restriction of the present utility model.

Referring to figs. 1 through Fig. 3, , this utility model provides a kind of manual type cataract crystalline lens acquisition device, it comprises: a trocar sheath 1, one cutter unit 2 and one is pushed unit 3, wherein this trocar sheath 1 is hollow form, this trocar sheath 1 front end extension is provided with the tubular probe 11 that an external diameter is less than the external diameter of trocar sheath, these probe 11 front ends are provided with an olecranon hook 111 and two relative Dens Tigris 112, inner close these probe 11 places of this trocar sheath 1 are provided with a waterproof plug 12, and be separated out a developing room 13 between waterproof plug 12 and probe 11, the tube wall of this trocar sheath 1 is to being provided with a water inlet 14 and an outlet 15 in developing room 13 places, and this water inlet 14 and outlet 15 communicate with this developing room 13 respectively, in addition, this trocar sheath 1 rear end is in conjunction with a capping 16 with female thread 161, the tube wall stage casing of this trocar sheath 1 is provided with a slotted hole 17 vertically, these slotted hole 17 rear ends are provided with locating slot 171, this cutter unit 2 is located in trocar sheath 1, there is the hollow cutting needle 22 that a hollow sleeve 21 and is positioned at hollow sleeve 21 front ends, on this hollow sleeve 21, be combined with one by trocar sheath 1 outside through the impeller 23 of slotted hole 17, these hollow sleeve 21 internal sleeve are provided with a spring 24, this hollow cutting needle 22 can be set in the probe 11 of this outer tube body 1, and front end can extend olecranon hook 111 and Dens Tigris 112 places of probe 11, this pushes unit 3 and has a screw rod 31 and and be incorporated into the center poker 32 of screw rod 31 front ends, this screw rod 31 is provided with the external screw thread 311 in order to screw togather with the female thread 161 of the capping 16 of trocar sheath 1, these screw rod 31 front ends and center poker 32 are arranged in the hollow sleeve 21 and hollow cutting needle 22 of cutter unit 2, make the spring 24 of cutter unit 2 butted between hollow sleeve 21 interior forward end and screw rod 31 front ends, these screw rod 31 rear ends convexedly stretch in trocar sheath 1 outside, and be provided with a knob 312 rotating in order to operate screw rod 31, before this center poker 32, correct developing room 13 the insides that are positioned at trocar sheath 1.

When this utility model carries out cataract operation, make the cross sections A1 of an about 2mm size in the cornea A marginal zone of patient's eye, the probe of trocar sheath 1 11 is stretched into patient's eye anterior chamber B, by the water inlet 14 of trocar sheath 1, normal saline solution is poured into simultaneously, adjust the water bottle height of normal saline solution, make anterior chamber B keep complete pressure, and by probe 11 olecranon hook 111 and Dens Tigris 112, with the strength upwards lifting backward, cataract crystal C tissue is hooked, bite, now pass action by the impeller 23 of cutter unit 2 along the slotted hole 17 of trocar sheath 1 again, drive hollow sleeve 21 and 22 displacements of hollow cutting needle of cutter unit 2, utilize hollow cutting needle 22 to cut above-mentioned hooking, the cataract crystal C tissue of biting, just can by hook, the cataract crystal C cutting tissue of biting gets off, and the cataract crystal C tissue that this excision is got off is entered in this hollow cutting needle 22, the then slotted hole 17 along trocar sheath 1 by the impeller 23 of cutter unit 2, drive hollow cutting needle 22 front ends of cutter unit 2 to retreat to the developing room 13 of trocar sheath 1, the excise cataract crystal C tissue getting off is pushed out by these center poker 32 front ends of pushing unit 3 in good time, fall in the developing room 13 of trocar sheath 1, again by the outlet 15 of trocar sheath 1, draw and discharge through syringe, also sucking-off in the lump of the related fragment dropping of part simultaneously.

So, repeat identical step, until all cataract crystal C remove totally completely, finally intraocular lens eyeglass is injected into the position of original crystal, complete operation.

Moreover, as shown in Figure 7, when manual type cataract crystalline lens acquisition device of the present utility model uses, it pushes unit 3 and can utilize the knob 312 of rotating screw bolt 31, and it is moving by the relative spiral shell of the external screw thread 311 of screw rod 31 and the capping of trocar sheath 1 16 female threads 161, drive center poker 32 is adjusted displacement, makes center poker 32 be adjusted to desired location forward or backward, reaches thus better practicality.

By the manual type cataract crystalline lens acquisition device of the present utility model of the structure of above-mentioned specific embodiment, can obtain following effect:

1. manual type cataract crystalline lens acquisition device of the present utility model, can carry out little incision cataract operation, improve the shortcoming of the large otch of tradition and expensive ultrasound emulsifying device, utilize manual engagement three-in-one mechanical acquisition cataract crystalline lens, operating procedure is simple, material application is economical, and safety is easy to learn, does not increase learning burden to surgical doctor.

2. manual type cataract crystalline lens acquisition device of the present utility model, when it carries out cataract operation, utilize olecranon hook 111 and the Dens Tigris 112 of probe 11 that cataract crystal is fixed, utilize hollow cutting needle 22 to cut and bring to developing room 13, cooperation center poker 32 is pushed discharge, utilizes simple theory of mechanics while therefore use, trocar sheath 1, cutter unit 2 and push that unit 3 is three-in-one works in coordination, and can reach good operation quality, greatly reduce surgical apparatus, space and funds.

Claims

1. a manual type cataract crystalline lens acquisition device, is characterized in that, comprises:

One trocar sheath, be hollow form, this trocar sheath front end extension is provided with the tubular probe that an external diameter is less than the external diameter of trocar sheath, this probe front end is provided with an olecranon hook, this trocar sheath is inner is provided with a developing room near this probe place, the tube wall of this trocar sheath is to being provided with a water inlet and an outlet in developing room place, and this water inlet and outlet communicate with this developing room respectively;

One cutter unit, it is located in trocar sheath, there is the hollow cutting needle that a hollow sleeve and is positioned at hollow sleeve front end, on this hollow sleeve, be combined with one for driving the impeller of this hollow sleeve and the displacement of hollow cutting needle, this hollow cutting needle is set in the probe of this outer tube body, and front end can extend the olecranon hook place of probe; And

One pushes unit, has a center poker, and this center poker is arranged in the hollow cutting needle of cutter unit, and Qie Gai center poker front end is positioned at the developing room the inside of trocar sheath.

2. manual type cataract crystalline lens acquisition device as claimed in claim 1, is characterized in that, the probe front end of this trocar sheath is also provided with two relative Dens Tigris.

3. manual type cataract crystalline lens acquisition device as claimed in claim 1, is characterized in that, this trocar sheath is inner is provided with a waterproof plug near this probe place, and this developing room is by being separated to form between this waterproof plug and probe.

4. manual type cataract crystalline lens acquisition device as claimed in claim 1, it is characterized in that, this trocar sheath rear end is in conjunction with the female capping of a tool, and this center poker of pushing unit is incorporated into a screw front end, this screw rod be provided with in order to the external screw thread of the internal screw-thread screw of this capping.

5. manual type cataract crystalline lens acquisition device as claimed in claim 4, is characterized in that, this spiro rod rear end of pushing unit convexedly stretches in trocar sheath outside, and is provided with one in order to operate the knob of screw rod rotation.

6. manual type cataract crystalline lens acquisition device as claimed in claim 1, is characterized in that, the tube wall stage casing of this trocar sheath is provided with a slotted hole vertically, and this slotted hole rear end is provided with locating slot, and the impeller of this cutter unit convexedly stretches in trocar sheath outside by this slotted hole.

7. manual type cataract crystalline lens acquisition device as claimed in claim 1, it is characterized in that, the hollow sleeve internal sleeve of this cutter unit is provided with a spring, this center poker of pushing unit is incorporated into a screw front end, the butted hollow sleeve interior forward end in cutter unit of this spring and pushing between the screw front end of unit.