CN108784759B

CN108784759B - Intra-articular loosening device

Info

Publication number: CN108784759B
Application number: CN201810673803.1A
Authority: CN
Inventors: 陈克银
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-06-26
Filing date: 2018-06-26
Publication date: 2021-07-02
Anticipated expiration: 2038-06-26
Also published as: CN108784759A

Abstract

The invention discloses an intra-articular loosening device, belongs to the field of medical instruments, and is used for solving the problems that in the prior art, a needle knife mirror can only peel off diseased tissues, the needle knife mirror needs to be pulled out after peeling off, other surgical tools need to be used again to remove the peeled diseased tissues, blind operation is performed in the removing process, and operation is inconvenient. The device comprises a light guide core, a light guide pipe and a knife pipe, wherein the light guide pipe is sleeved outside the light guide core, the knife pipe is sleeved outside the light guide pipe, the lower ends of the light guide core, the light guide pipe and the knife pipe are flush, and the lower end of the knife pipe is connected with a blade; the cutter tube is also sleeved with a protective sleeve, two symmetrical sliding grooves are formed in the side wall of the lower end of the protective sleeve along the axial direction, and two side edges of the blade are embedded into the sliding grooves; the lower ends of the two symmetrical sliding grooves are respectively provided with a door tooth, one end of each door tooth is rotationally connected with the corresponding sliding groove through a pin shaft, a linkage mechanism is arranged between each door tooth and the corresponding blade, and the downward end of each door tooth is opened and closed along with the axial relative motion of the corresponding blade and the corresponding sliding groove through the linkage mechanism. Under the scheme of visually stripping the pathological tissue, the technical scheme integrates the visual clamping to take out the pathological tissue, thereby being convenient for operation.

Description

Intra-articular loosening device

Technical Field

The invention belongs to the field of medical instruments, and particularly relates to an intra-articular loosening device.

Background

The treatment of the common arthroscope is usually to open 3 or more than 3 channels at the operation position for convenient operation, mainly cuts or peels damaged tissues such as mucosa, cartilage and the like in the treatment process, and has relatively large volume and relatively long recovery time;

the incision of the minimally invasive needle-knife endoscope is less than 0.5cm during treatment, at most 2 channels are opened, sometimes, the whole diagnosis and treatment process can be completed by one channel, and joints, pathological tissues and joint cavities are stripped and dredged during the treatment process to remove adhesion, eliminate inflammation and recover functions, and the wound in the operation is relatively small.

For example, patent document No. CN201110458403.7 discloses a minimally invasive integrated needle-knife scope, which comprises a scope-knife assembly optical mirror assembly, a scope-knife assembly tube core assembly and a scope-knife assembly hard sleeve assembly; the lens-knife combination optical lens component comprises a lens, a lens seat and a light guide pipe; the mirror cutter assembly tube core component comprises a cutter tube core; the mirror-cutter combination hard sleeve component comprises a cutter tube; the light guide pipe is inserted on the knife pipe core, and the knife pipe core is inserted on the knife pipe. The invention discloses an operation method of a minimally invasive integrated needle-knife scope, which comprises the following steps: (1) the needle knife mirror is held by hand and is inserted into the knee joint through an anterolateral approach; (2) opening the water inlet channel to fill the joint cavity; (3) sequentially probing the suprapatellar capsule, the patellofemoral joint, the medial tibiofemoral gap, the intercondylar fossa, the lateral tibiofemoral gap, the lateral sulcus of the knee, the posterior medial gap and the posterior lateral gap; in the probing process, the mirror surface angle of the whole needle-knife mirror is correspondingly adjusted according to the specific part to be probed.

However, in the prior art, the needle-knife mirror can only strip the lesion tissue, and after the lesion tissue is stripped, the needle-knife mirror needs to be pulled out to remove the stripped lesion tissue by using other surgical tools again, so that blind operation is performed in the removing process, and the operation is inconvenient.

Disclosure of Invention

The object of the present invention is to provide an intra-articular release device that solves the deficiencies of the prior art.

In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:

an intra-articular loosening device comprises a light guide core, a light guide pipe and a knife pipe, wherein the light guide pipe is sleeved outside the light guide core, the knife pipe is sleeved outside the light guide pipe, the lower ends of the light guide core, the light guide pipe and the knife pipe are flush, and the lower end of the knife pipe is connected with a blade;

the cutter tube is also sleeved with a protective sleeve, the side wall of the lower end of the protective sleeve is axially provided with two symmetrical sliding grooves, and two side edges of the blade are embedded into the sliding grooves;

the lower ends of the two symmetrical sliding grooves are respectively provided with a door tooth, one end of each door tooth is rotationally connected with the corresponding sliding groove through a pin shaft, a linkage mechanism is arranged between each door tooth and the corresponding blade, and the downward end of each door tooth is opened and closed along with the axial relative motion of the corresponding blade and the corresponding sliding groove through the linkage mechanism.

By adopting the technical scheme, the light guide core, the light guide pipe and the knife pipe are integrated into a whole to form an image conduction structure, the lower end of the knife pipe is connected with the blade, and the blade arranged at the lower end of the knife pipe is pushed to move axially by pushing the knife pipe, so that the affected part can be cut, peeled and the like; the front teeth are rotationally connected with the sliding chutes through pin shafts, can rotate by taking the connecting points as pivots, are connected with the blades through the linkage mechanisms, and are opened and closed through relative motion between the blades and the sliding chutes; incisors and blade all are located image conduction structure front end, and the pathological change tissue cutting, peeling off to the affected part are visual operation, and the excision back promotes the sword pipe forward and makes it carry out axial relative motion with the sleeve pipe, opens and shuts through the incisors and fixes the pathological change tissue after cutting, peeling off, and fixed in-process also is in visual within range, can all go on under visual operation cutting, peeling off and taking out pathological change tissue, very big simplification operation process, it is more convenient.

Further limiting, the linkage mechanism comprises a limiting pin and a limiting groove, the upper end of the limiting pin is connected with the lower end face of the blade, the limiting groove is formed in the side, facing the blade, of the door tooth, and the lower end of the limiting pin is vertically inserted into the limiting groove.

The link gear comprises the spacer pin that sets up terminal surface under the blade respectively and the spacing groove that is located the door tooth and incline towards the blade, and the spacer pin lower extreme inserts the spacing inslot perpendicularly, when blade and spacing groove take place axial relative motion, slides in the spacing inslot through the spacer pin and stirs the door tooth and rotate with the spout tie point and open and shut, and the spout can be mode settings such as arc or straight line.

Further limiting, a clamping groove is formed in the connecting end of the blade and the cutter tube, and the lower end of the cutter tube is inserted into the clamping groove.

The connecting end of the blade and the cutter tube is provided with a clamping groove and is clamped with the lower end of the cutter tube through the clamping groove, a plurality of grooves can be formed in the two side walls of the clamping groove, and a plurality of salient points can be arranged at the contact positions of the two side walls of the clamping groove and the cutter tube and are fixed through the matching of the grooves and the salient points.

Further limit, a plurality of anti-slip strips which are uniformly distributed are arranged on the inner side surfaces of the door teeth.

The antislip strip outwards bulges or caves in, can effectively improve the friction effect between the incisor and the pathological change tissue when the pathological change tissue of centre gripping, has the improvement and prevents that pathological change tissue from deviating from at the centre gripping in-process.

Further limit, blade lower extreme both sides all outwards bulge and the width is greater than the distance between two spout bottoms.

The both sides of the lower end of the blade are outwards protruded, the width of the lower end of the blade is larger than the distance between the bottoms of the two sliding grooves, the blade can be prevented from sliding in the sliding grooves, and meanwhile, the outer sleeve can be used as a force conducting part when pathological tissues are removed, so that the operation is convenient.

Further inject, light guide core, light pipe, knife pipe, protecting pipe cross section are semi-circular, two straight line limit both sides of protecting pipe cross section are located respectively to two spouts.

The light guide core, the light guide pipe, the knife tube, the cross section of the protective sleeve and the two sliding grooves are respectively arranged on two sides of the straight edge of the cross section of the protective sleeve, so that the blade position and the incisor position are both close to one side of the straight edge, and the blade is close to the pathological change position when the pathological change tissue and the incisor clamping pathological change tissue are rejected, and the operation is convenient.

Further, the front ends of the opposite sides of the two front teeth are respectively provided with permanent magnets with opposite magnetic poles of opposite surfaces.

Two incisors are opposite to each other and the magnetic poles that set up permanent magnet and two permanent magnets of side set up, and after two incisors tip were close to, it was fixed to adsorb through two permanent magnets, made the incisors centre gripping obtain fixing.

Further, the bottoms of the two sliding grooves are communicated.

The bottoms of the two sliding grooves are communicated to form a plate shape, so that the strength of a connecting structure between the two sliding grooves is improved, and the blades are prevented from deflecting and displacing when pathological tissues are removed.

Further inject, the outside one side of spout lower extreme is equipped with connects the journal stirrup, it has the pivot to insert on the journal stirrup to connect, the pivot pierces through to connect in the journal stirrup inserts the incisor perpendicularly, the incisor rotates through pivot and connection journal stirrup cooperation and spout lower extreme to be connected.

Compared with the prior art, the visual clamping device integrates visual clamping to take out the lesion tissue under the scheme of visually stripping the lesion tissue, and is convenient to operate.

Drawings

The invention is further illustrated by the non-limiting examples given in the accompanying drawings;

FIG. 1 is a schematic view of the intra-articular release device of the present invention;

FIG. 2 is a schematic view of the structure of the outer sleeve;

FIG. 3 is a schematic view of the connection structure of the blade and the knife tube;

FIG. 4 is an enlarged view of A in FIG. 1;

FIG. 5 is a schematic view of the structure with two incisors separated;

FIG. 6 is a schematic view of the closed state of two incisors;

the main element symbols are as follows:

the light guide device comprises a light guide core 1, a light guide pipe 2, a knife pipe 3, a blade 4, a sliding groove 5, a door tooth 6, a limiting pin 7, a limiting groove 8, a clamping groove 9, an anti-slip strip 10, a permanent magnet 11, a salient point 12, a groove 13, a connecting support lug 14, a rotating shaft 15 and a sleeve 16.

Detailed Description

In order that those skilled in the art can better understand the present invention, the following technical solutions are further described with reference to the accompanying drawings and examples.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, and fig. 6, an intra-articular loosening device comprises a light guide core 1, a light guide tube 2, and a knife tube 3, wherein the light guide tube 2 is sleeved outside the light guide core 1, the knife tube 3 is sleeved outside the light guide tube 2, the lower ends of the light guide core 1, the light guide tube 2, and the knife tube 3 are flush, and the lower end of the knife tube 3 is connected with a blade 4; a protecting sleeve 16 is sleeved outside the knife tube 3, two symmetrical sliding grooves 5 are axially formed in the side wall of the lower end of the protecting sleeve 16, and two side edges of the blade 4 are embedded into the sliding grooves 5; the lower ends of the two symmetrical sliding grooves 5 are respectively provided with a door tooth 6, one end of each door tooth 6 is rotatably connected with the corresponding sliding groove 5 through a pin shaft, a linkage mechanism is arranged between each door tooth 6 and the corresponding blade 4, and the downward end of each door tooth 6 is opened and closed along with the axial relative motion of the corresponding blade 4 and the corresponding sliding groove 5 through the linkage mechanism.

Preferably, the linkage mechanism comprises a limiting pin 7 and a limiting groove 8, the upper end of the limiting pin 7 is connected with the lower end face of the blade 4, the limiting groove 8 is formed in the side, facing the blade 4, of the front tooth 6, and the lower end of the limiting pin 7 is vertically inserted into the limiting groove 8.

Preferably, a clamping groove 9 is formed at the connecting end of the blade 4 and the knife tube 3, and the lower end of the knife tube 3 is inserted into the clamping groove 9.

Preferably, the front teeth 6 are provided with a plurality of anti-slip strips 10 which are uniformly distributed on the inner side surface.

Preferably, both sides of the lower end of the blade 4 protrude outwards and have a width larger than the distance between the bottoms of the two sliding grooves 5.

Preferably, the cross sections of the light guide core 1, the light guide pipe 2, the knife pipe 3 and the protecting sleeve 16 are all semicircular, and the two sliding grooves 5 are respectively arranged on two sides of the linear edge of the cross section of the protecting sleeve 16.

Preferably, the front ends of the two front teeth 6 on the opposite sides are respectively provided with permanent magnets 11 with opposite magnetic poles on the opposite surfaces.

Preferably, the two chutes 5 are communicated at the bottom.

According to the technical scheme, the light guide core 1, the light guide pipe 2 and the knife pipe 3 are integrated into a whole to form an image conduction structure, the lower end of the knife pipe 3 is connected with the blade 4, and the blade 4 arranged at the lower end of the knife pipe 3 is pushed to move axially by pushing the knife pipe 3, so that operations such as cutting, stripping and the like can be performed on an affected part; the front teeth 6 are rotationally connected with the sliding chute 5 through a pin shaft, can rotate by taking a connecting point as a fulcrum, are connected with the blade 4 through a linkage mechanism, and are opened and closed through relative motion between the blade 4 and the sliding chute 5; incisors 6 and blade 4 all are located image conduction structure front end, cut, peel off the pathological change tissue of affected part and be visual operation, promote forward with sword pipe 3 after the excision and make it carry out axial relative motion with sleeve pipe 16, open and shut through incisors 6 and will cut, the pathological change tissue after peeling off is fixed, also be in visual within range in the fixed process, can all go on under visual operation cutting, peel off and take out pathological change tissue, very big simplification operation process, it is more convenient. The link gear comprises spacing pin 7 and the spacing groove 8 that is located the door tooth 6 towards blade 4 side that set up terminal surface under blade 4 respectively, and 7 lower extremes of spacing pin insert the spacing inslot 8 perpendicularly, when blade 4 and spacing groove 8 take place axial relative motion, slide in spacing groove 8 through spacing pin 7 and stir door tooth 6 and rotate with 5 tie points of spout and open and shut, and spout 5 can be modes such as arc or straight line and set up. The connecting end of the blade 4 and the knife pipe 3 is provided with a clamping groove 9 and is connected with the lower end of the knife pipe 3 in a clamping mode through the clamping groove 9, a plurality of grooves 13 can be formed in two side walls of the clamping groove 9, a plurality of salient points 12 can be arranged at the contact positions of the knife pipe 3 and the two side walls of the clamping groove 9, and the clamping groove 9 and the salient points 12 are matched and fixed. The anti-slip strip 10 outwards bulges or caves in, can effectively improve the friction effect between incisor 6 and the pathological change tissue when the pathological change tissue of centre gripping, has the improvement and prevents that pathological change tissue from deviating from at the centre gripping in-process. The both sides of the lower end of the blade 4 are outwards protruded, the width of the blade is larger than the distance between the bottoms of the two sliding grooves 5, the blade 4 can be prevented from sliding in the sliding grooves 5, and meanwhile, the outer sleeve 16 can be used as a force transmission part when pathological tissues are removed, so that the operation is convenient. Light guide core 1, light guide pipe 2, sword pipe 3, the 16 cross sections of protecting pipe and two spout 5 locate the 16 cross sections of protecting pipe straight line limit both sides respectively, make 4 positions of blade and 6 positions of incisor all will be in by straight line limit one side, make blade 4 all will be close to the pathological change position when rejecting pathological change tissue and 6 centre gripping pathological change tissues of incisor, the operation of being convenient for. Two front teeth 6 are to the side set up permanent magnet 11 and two permanent magnet 11's magnetic pole opposite, and after two front teeth 6 tip were close to, can adsorb fixedly through two permanent magnet 11, make front teeth 6 centre gripping obtain fixedly. The bottoms of the two sliding grooves 5 are communicated to form a plate shape, so that the strength of a connecting structure between the two sliding grooves 5 is improved, and the blades 4 are prevented from deflecting and displacing when pathological tissues are removed. 5 outside one side of lower extreme of spout 5 is equipped with connects journal stirrup 14, connect journal stirrup 14 to go up to have inserted pivot 15, pivot 15 pierces through and connects journal stirrup 14 and insert perpendicularly in incisor 6, incisor 6 is connected with 5 lower extremes of spout through pivot 15 and the cooperation of connecting journal stirrup 14.

The intra-articular release device provided by the present invention has been described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. The utility model provides an intra-articular release device, includes leaded light core, light pipe, knife pipe, the light pipe overlaps outside the leaded light core, the knife pipe overlaps outside the light pipe, its characterized in that: the lower ends of the light guide core, the light guide pipe and the knife pipe are flush, and the lower end of the knife pipe is connected with a blade;

the lower ends of the two symmetrical sliding chutes are respectively provided with a door tooth, one end of each door tooth is rotationally connected with the corresponding sliding chute through a pin shaft, a linkage mechanism is arranged between each door tooth and the corresponding blade, and the downward end of each door tooth is opened and closed along with the axial relative motion between the corresponding blade and the corresponding sliding chute through the linkage mechanism;

the linkage mechanism comprises a limiting pin and a limiting groove, the upper end of the limiting pin is connected with the lower end face of the blade, the limiting groove is formed in the side, facing the blade, of the front tooth, and the lower end of the limiting pin is vertically inserted into the limiting groove.

2. The intra-articular release device of claim 1, wherein: the blade is provided with a clamping groove with a knife tube connecting end, and the lower end of the knife tube is inserted into the clamping groove.

3. The intra-articular release device according to claim 1 or 2, characterized in that: the inner side surfaces of the door teeth are provided with a plurality of anti-slip strips which are uniformly distributed.

4. The intra-articular release device of claim 3, wherein: both sides of the lower end of the blade protrude outwards, and the width of the blade is larger than the distance between the bottoms of the two sliding grooves.

5. The intra-articular release device of claim 3, wherein: the cross sections of the light guide core, the light guide pipe, the knife pipe and the protective sleeve are semicircular, and the two sliding grooves are respectively arranged on two sides of the linear edge of the cross section of the protective sleeve.

6. The intra-articular release device of claim 3, wherein: the front ends of the opposite sides of the two front teeth are respectively provided with permanent magnets with opposite magnetic poles of opposite surfaces.

7. The intra-articular release device of claim 3, wherein: the bottoms of the two sliding grooves are communicated.