CN103705338A

CN103705338A - Intraocular foreign body forceps

Info

Publication number: CN103705338A
Application number: CN201410025772.0A
Authority: CN
Inventors: 颜华
Original assignee: Tianjin Medical University General Hospital
Current assignee: SUZHOU BILI MEDICAL TECHNOLOGY Co.,Ltd.
Priority date: 2014-01-21
Filing date: 2014-01-21
Publication date: 2014-04-09
Anticipated expiration: 2034-01-21
Also published as: CN103705338B

Abstract

The invention discloses intraocular foreign body forceps, comprising hand shanks, forceps claw sections and an outer sleeve, wherein each forceps claw section comprises a fixed tube and a non-magnetic forceps claw; each fixed tube is fixedly connected with each hand shank; each non-magnetic forceps claw is fixed at the front end of each fixed tube; the outer sleeve is sleeved on the outer sides of the fixed tubes and can be driven to slide back and forth, so as to control the forceps claws to get close to be folded or depart to expand; a magnetic component is fixedly arranged at the front end of each fixed tube, and is contained into the outer sleeve when the forceps claws get close to each other; at least the end part of the magnetic component is exposed out of the port of the outer sleeve when the outer sleeve slides backwards to control the forceps claws to expand. By adopting the intraocular foreign body forceps, the difficulty in the process of taking out an irregular magnetic foreign body inside the ball is solved, the defects that the foreign body is unstable and easy to fall off are overcome, the stability in the process of taking out the foreign body is increased, the achievement ratio of operation is improved, the operation time is reduced, the surgical risk and complication are reduced, and the intraocular foreign body forceps are safe to operate.

Description

Intraocular foreign body tweezer

Technical field

The present invention relates to ophthalmology technical field of tools, particularly relate to a kind of intraocular foreign body tweezer.

Background technology

Ocular injury is especially one of important blinding factor of ophthalmology with the ocular injury of intraocular foreign body, if dealt with improperly, can cause the serious consequences such as blind, atrophy of eyeball.Along with carrying out of vitreous excision microsurgery, under surgical microscope, take out foreign body, the taking-up success rate of intraocular foreign body is obviously improved.

Conventional foreign body forceps is comprised of handle and head end, the about 150mm of total length.Handle has thumb press district or other movement structures, in order to control the unlatching clamping of tweezers head end; Head end is towards rotatable adjusting, thereby it is easier that intraocular foreign body is clamped.According to the number of tweezer pawl, can be divided into two pawl formulas, three-pawl type, four-jaw type.

Figure 1 shows that the foreign body forceps structural representation of prior art.Being illustrated in figure 1 Granted publication number is the structure of disclosed a kind of ball inner tweezers for operation of ophthalmology in CN2162939Y, it comprises pipe handle 1, at pipe handle, 1 front opening place is coated with sleeve pipe 3, sleeve pipe 3 axially coordinates with pipe handle 1 sliding plug along pipe handle, sleeve pipe 3 is slided by the linkage driving being arranged between operating grip and sleeve pipe by the operating grip 2 being arranged on pipe handle in pipe handle, in sleeve pipe 3 and pipe handle 1, be set with tweezer claw, tweezer claw is by extending in pipe handle, and the fixed bar being fixedly connected with pipe handle forms with the two tweezer pawls 4 that are positioned at fixed bar front end, along with the front and back Sliding Control two tweezer pawls 4 of sleeve pipe are mutually near drawing in or deviating from and open mutually.During use, by drive sleeve, towards two tweezer pawl directions, move, two tweezer pawls 4 are subject to sleeve pipe 3 extruding and close up, tweezer mouth closure is with gripping foreign body, and when sleeve pipe is when pipe handle direction moves, two tweezer pawls are automatically separated, tweezer mouth opens to decontrol foreign body or prepares gripping foreign body.When not using foreign body forceps, sleeve pipe is pulled to forward to two tweezer pawls and draws the position in sleeve pipe completely in, thus protection two tweezer pawls.

There is following shortcoming in this intraocular foreign body tweezer at present: while stating in the use the surgical forceps crawl foreign body of structure, the sclerotic puncture mouth diameter of conventional 20G vitrectomy is 1mm, existing foreign body forceps is for irregular intraocular foreign body, as ferromagnetic bits class foreign body is very difficult disposable, successfully catch, thereby need to repeatedly clamp, may increase retinal hemorrhage, ceasma equivalent risk; And operating time is longer, large the increasing that have a big risk of endophthalmitis; In addition, long-time operation is also test to the muscle power of patient and operative doctor.Existing foreign body forceps is in foreign body process simultaneously, on the one hand due to irregular foreign body each several part discontinuity, when leaving regular scleral incision, touch ball wall and very easily cause foreign body again to come off, the foreign body that comes off can cause amphiblestroid secondary damage, affects prognosis; On the other hand, even if foreign body does not come off, foreign body also can cause sclera to damage when by sclera mouth, likely can affect sclera airtight, causes sclera to leak and increases endophthalmitis risk.

Summary of the invention

The object of the invention is for the technological deficiency existing in prior art, and a kind of intraocular foreign body tweezer that can effectively improve ferromagnetic class foreign body effect is provided.

For realizing the technical scheme that object of the present invention adopts, be:

A kind of intraocular foreign body tweezer, comprise hands handle, tweezer claw and trocar sheath, described tweezer claw comprises the stationary pipes being fixedly connected with handle and is positioned at the non magnetic tweezer pawl of stationary pipes front end, described trocar sheath is sleeved on stationary pipes outside and can be driven front and back to slide to control tweezer pawl mutually near drawing in or deviating from and open mutually, front end in described stationary pipes is fixedly installed magnetic part, trocar sheath described in when described trocar sheath draws tweezer pawl in is taken in magnetic part in it, magnetic part described in when described trocar sheath slides backward tweezer pawl and opens at least exposes outside trocar sheath port end.

Wherein, described magnetic part and the connected mode of stationary pipes can be interference fit, cementing or other any modes, the setting position of magnetic part is advisable not affect the folding of tweezer pawl, and when simultaneously the distance of described magnetic part distance sleeve port is with the folding of tweezer pawl, it can expose or be hidden in sleeve pipe and is advisable.

Described non-magnetic tweezer pawl is carbon element material.

Described magnetic part is the magnetic posts that is fixedly installed on stationary pipes end.

Described tweezer claw is three-pawl type or four-jaw type.

Compared with prior art, the invention has the beneficial effects as follows:

The invention solves the difficulty in irregular magnetic foreign body taking-up process in ball, overcome unstable, the caducous shortcoming of foreign body, increased the stability in foreign body process, improved success rate of operation, reduced operating time, reduced operation risk and complication, operating aspect safety.

Accompanying drawing explanation

Figure 1 shows that the foreign body forceps structural representation of prior art;

Figure 2 shows that foreign body forceps draws state structural representation in;

Figure 3 shows that foreign body forceps opens state structural representation;

Figure 4 shows that the A portion enlarged diagram shown in Fig. 2;

Figure 5 shows that the B portion enlarged diagram shown in Fig. 3.

Description of reference numerals in figure

1. pipe handle, 2. operating grip, 3. sleeve pipe, 4. tweezer pawl, 5. handle, 6. trocar sheath, 7. stationary pipes, 8. non magnetic tweezer pawl, 9. magnetic part

The specific embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

As shown in Figure 2-5, intraocular foreign body tweezer of the present invention comprises handle 5, tweezer claw and trocar sheath 6, described tweezer claw comprises the stationary pipes 7 being fixedly connected with handle and the non magnetic tweezer pawl 8 that is positioned at stationary pipes front end, described trocar sheath 6 is sleeved on stationary pipes outside and can be driven front and back to slide to control tweezer pawl mutually near drawing in or deviating from and open mutually, front end in described stationary pipes is fixedly installed magnetic part 9, preferably described magnetic part is magnetic posts or magnetic block, trocar sheath described in when described trocar sheath draws tweezer pawl in is taken in magnetic part in it, magnetic part described in when described trocar sheath slides backward tweezer pawl and opens at least exposes outside the trocar sheath mouth of pipe end.

Wherein, described handle can be mediate to control trocar sheath action type, or by pressing keys, controls the multiple patterns such as trocar sheath action, and described tweezer pawl can be two pawl formulas, three-pawl type, four-jaw type or arbitrary shape or the quantity such as cup-shaped.

Specifically, whole foreign body forceps is divided into handle and head end, and head end is designed to the mode that non-magnet material combines with permanent magnet material, preferably, tweezer pawl is carbon materials, and this material safety and stability are higher, and in tweezer radix unguis portion's stationary pipes end, magnetic part are set.The closed state of tweezer pawl is entered to eyeball inside, need to pinch while getting, control trocar sheath mobile so that tweezer pawl is opened backward, now the relative trocar sheath of magnetic part move forward and the mouth of pipe that stretches out trocar sheath so that magnetic foreign body is produced to magnetic adsorptive power, when tweezer pawl during near foreign body magnetic part hold foreign body, at this moment control that trocar sheath moves forward so that tweezer pawl closure is bitten foreign body, magnetic part is in trocar sheath moves retraction trocar sheath backward simultaneously, if foreign body volume is less than trocar sheath size, be sucked in trocar sheath.When tweezers exit wound, foreign body does not have the risk that comes off.If foreign body volume is greater than trocar sheath diameter, because there is the interlock of magnetic attraction effect and tweezer pawl, when tweezers exit wound, foreign body is also difficult to come off, greatly avoided cannot disposable successfully clamping or taking-up process in the risk that comes off of foreign body, can facilitate, reliable, safe, the magnetic foreign body of successfully winning ophthalmic arbitrary shape.

The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims

1. an intraocular foreign body tweezer, it is characterized in that: comprise hands handle, tweezer claw and trocar sheath, described tweezer claw comprises the stationary pipes being fixedly connected with handle and is positioned at the non magnetic tweezer pawl of stationary pipes front end, described trocar sheath is sleeved on stationary pipes outside and can be driven front and back to slide to control tweezer pawl mutually near drawing in or deviating from and open mutually, front end in described stationary pipes is fixedly installed magnetic part, trocar sheath described in when described trocar sheath draws tweezer pawl in is taken in magnetic part in it, magnetic part described in when described trocar sheath slides backward tweezer pawl and opens at least exposes outside trocar sheath port end.

2. intraocular foreign body tweezer as claimed in claim 1, is characterized in that: described non-magnetic tweezer pawl is carbon element material.

3. intraocular foreign body tweezer as claimed in claim 1 or 2, is characterized in that: described magnetic part is magnetic posts or the magnetic block that is fixedly installed on stationary pipes end.

4. intraocular foreign body tweezer as claimed in claim 1 or 2, is characterized in that: described tweezer claw is three-pawl type or four-jaw type.