CN209770444U

CN209770444U - Tissue traction device for assisting endoscope treatment

Info

Publication number: CN209770444U
Application number: CN201920263845.8U
Authority: CN
Inventors: 宁守斌; 王�锋
Original assignee: JIANGSU RUISHANG MEDICAL DEVICES CO Ltd
Current assignee: JIANGSU RUISHANG MEDICAL DEVICES CO Ltd
Priority date: 2019-03-02
Filing date: 2019-03-02
Publication date: 2019-12-13
Anticipated expiration: 2029-03-02

Abstract

The utility model discloses a tissue traction device for assisting endoscope treatment, which is a dumbbell-shaped structure body with O-shaped rings at two ends and middle connecting lines; the pusher comprises a thin tube, wherein the front end of the thin tube is connected with a front end needle, the rear end of the thin tube is connected with a holding rod, two tube cavities are axially formed from the rear end surface of the front end needle to the inner side, the front end of each tube cavity is communicated with the circumferential surface of the front end needle to form a through hole, a handle and the holding rod are movably connected in a relative displacement mode, two metal wires are threaded in the tube cavities of the front end needle, the front end of each tube cavity is exposed out of the circumferential surface of the front end needle, O-shaped ring holes at two ends of the tissue tractor are respectively clamped on the front end of each metal wire, and the rear end. The utility model discloses can send into scope operation region through scope biopsy pore with the tissue tractor according to needs in the art at any time, need not to withdraw from the scope, unite the titanium clamp and can realize carrying out accurate traction in the intracavity, effectively reduce the operation degree of difficulty, improve the operation speed.

Description

Tissue traction device for assisting endoscope treatment

Technical Field

The invention relates to the field of medical auxiliary equipment, in particular to a tissue traction device in endoscopic treatment, which comprises a tissue tractor and a pusher thereof.

Background

In recent years, with the rapid development of endoscopic treatment technologies, many new endoscopic treatment technologies have been applied, such as endoscopic mucosal dissection (ESD), endoscopic tumor resection (ESE), endoscopic resection of the whole layer (EFTR), oral endoscopic myotomy (POEM), and natural transluminal endoscopic surgery (NOTES). Due to the structural limitation of the instruments of the endoscope, the tissue traction can not be carried out under the endoscope, thereby bringing a plurality of difficulties and obstacles to the treatment under the endoscope. At present, technologies such as dental floss traction and the like are mainly applied clinically for auxiliary treatment, but the traction technology has many limitations and is relatively complex to implement, and the clinical requirements cannot be met.

In order to better realize the traction in the endoscopic surgery and provide a good visual field for the endoscopic surgery, a simpler and more effective traction device is necessary to be developed to assist an endoscopic physician to finish the endoscopic surgery with high difficulty, thereby improving the operation quality, reducing the operation difficulty, shortening the operation time and increasing the operation safety, thereby effectively solving the clinical problem of realizing the accurate tissue traction under the endoscope.

Disclosure of Invention

Aiming at the defects of the prior art, the invention aims to provide the tissue traction device for assisting the endoscopic treatment, which solves the problems, can simply and conveniently send the tissue traction device into the area around the focus, accurately traction the target tissue of the operation area in cooperation with a titanium clamp according to the operation requirement, flexibly traction the tissue to provide a good visual field and an endoscopic operation space for an operator, effectively reduce the operation difficulty and greatly improve the operation speed.

in order to achieve the purpose, the invention provides the following technical scheme:

A tissue traction device for assisting endoscope treatment comprises a tissue tractor and a pusher thereof, wherein the tissue tractor is a dumbbell-shaped structure body which is made of flexible high polymer materials and provided with O-shaped rings at two ends and a middle connecting line; the pusher includes front end needle, tubule, holding rod, handle and wire, the front end needle is connected to the tubule front end, the holding rod is connected to the rear end, two lumens are seted up to the inside axial of front end needle rear end face, the lumen front end leads to and forms the through-hole to the all surface forms of front end needle, handle and holding rod shift swing joint relatively, two wires are worn in the lumen of front end needle, the front end exposes the all surface of front end needle, organize the both ends O type circle hole of tractor and block respectively on the wire front end, the wire rear end passes the tubule cavity, it is connected with the handle to wear in the holding rod.

The invention further improves the technical scheme that the pull handle and the holding rod are movably connected in a relative displacement mode, namely, a section of through groove with the length larger than that of the pull handle is dug at the middle lower part of the holding rod, the T-shaped or I-shaped pull handle is arranged in the through groove, and a spring at the upper end of the pull handle is connected to the inside of the holding rod above. The holding rod is held by a single hand, fingers hook the handle to move up and down along the holding rod, the metal wire is pulled back or stretched, and the tissue retractor wound at the front end of the metal wire on the circumferential surface of the front end needle is delivered to the peripheral part of the focus.

according to a further improved technical scheme of the invention, an axial cylindrical groove is formed in the holding rod above the through groove, the spring is arranged in the cylindrical groove, and the bottom end of the spring is connected to the top end of the handle. The spring is arranged in the cylindrical groove, and the operation is relatively stable.

According to a further improved technical scheme of the invention, a downward convex cylinder is arranged on the top wall in the cylindrical groove, a first convex column is arranged at the top of the handle, an annular groove is formed in the top of the first convex column, the top end of the spring is sleeved on the cylinder, and the lower end of the spring is clamped on the cylinder in the annular groove. Two ends of the spring are clamped on the first protruding columns, so that the spring is fixed more stably.

The invention further improves the technical scheme that the back of the handle is provided with a second axial convex column, the inner wall of the through groove of the holding rod is provided with a limiting groove which is matched with the second convex column in a clamping way, the limiting groove is longer than the second convex column, and the second convex column moves up and down in the limiting groove. The handle is limited and can only move up and down along the limiting groove, so that the handle cannot shake left and right, and the operability is better.

According to a further improved technical scheme of the invention, the front end of the front end needle is in a cone shape. The hose can conveniently enter the human body.

according to a further improved technical scheme of the invention, through holes which are communicated from the front end of the tube cavity to the peripheral surface of the needle at the front end are respectively arranged on the upper and lower opposite surfaces. The tissue retractor is wound on the front end needle to expand and open the front end needle, so that the tissue retractor is convenient to bundle and fix.

According to a further improved technical scheme of the invention, the front end of the metal wire is forked, and the rear end of the metal wire is combined into a whole, so that an inverted Y shape is formed. Reduces redundant materials and facilitates the recovery and release of the metal wire.

The invention further improves the technical scheme that the front end of the metal wire is bent with a hook. The two end holes are used for hooking the tissue retractor and can not fall off in the conveying process.

According to a further improved technical scheme of the invention, the tissue retractor and the thin tube are made of one of medical silicon rubber, a polytetrafluoroethylene film, a polyurethane film or a polyamide film, and the holding rod, the handle and the front end needle are made of polyethylene materials.

The invention has the beneficial effects that:

The tissue retractor is fixed in the pusher by utilizing the front end of the metal wire, so that an operator can conveniently send the retractor into an endoscopic operation area through an endoscopic pore channel according to needs at any time in an operation without withdrawing the endoscope in the operation, the retractor can be combined with a titanium clamp to carry out accurate intracavity traction on target tissues after being sent to the operation area, the adopted tissue retractor has good retraction elasticity, can ensure continuous traction in the operation process, provides a good visual field for the operator, does not influence the operation of the endoscope, can repeatedly send a plurality of tissue retractors into the operation area according to needs in the operation, greatly simplifies the complicated process of placing dental floss for traction at present, and ensures that the traction in the operation is safer, convenient and quick.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a tissue retractor of the present invention;

FIG. 3 is a schematic view showing the internal structure of the front needle and the hose in the front part of the present invention;

FIG. 4 is a schematic view of the internal structure of the guard bar and the handle at the rear of the present invention;

FIG. 5 is a schematic view of the shape of the wire of the present invention;

FIG. 6 is a perspective view of the present invention pull handle.

Detailed Description

As shown in fig. 1 to 6, the invention comprises a tissue retractor 6 and a pusher, wherein the tissue retractor 6 is a dumbbell-shaped structure body of an O-shaped ring middle connecting line at two ends, which is made of a flexible high polymer material (such as medical silicon rubber), the length is between 1 mm and 10mm, the diameter of a round hole at two ends is between 1 mm and 5mm, and the thickness is between 0mm and 1.5 mm; the pusher comprises a front end needle 5, a thin tube 4, a holding rod 2, a handle 3 and a metal wire 7, wherein the front end needle 5 is connected to the front end of the thin tube 4, the holding rod 2 is connected to the rear end, two tube cavities 51 are axially arranged inwards from the rear end surface of the front end needle 5, the front ends of the tube cavities 51 are communicated to the circumferential surface of the front end needle to form through holes 52, the through holes 52 are respectively arranged on the upper and lower opposite surfaces, the handle 3 is movably connected with the holding rod 2 in a relative displacement manner, specifically, a section of through groove 21 with the length larger than that of the handle is formed in the middle lower part of the holding rod 2, the I-shaped handle 3 is arranged in the through groove 21, an axial cylindrical groove 22 is arranged in the holding rod above the through groove 21, a downward convex cylinder 23 is arranged on the inner top wall of the cylindrical groove 22, a first convex column 31 is arranged at the top of the handle 3, an annular groove 32 is arranged at the top. The metal wire 7 penetrates through the lumen 51 of the front end needle, the front end of the metal wire is exposed out of the peripheral surface of the front end needle 5, O-shaped ring holes at two ends of the tissue tractor 6 are respectively clamped at the front end of the metal wire 7, in order to ensure that the tissue tractor 6 is fixed on the front end needle and is not easy to fall off, the front end of the metal wire 7 is bent with a clamping hook, and the rear end of the metal wire 7 penetrates through the hollow cavity of the thin tube 4 and penetrates into the holding rod 2 to be connected with a ring buckle at the bottom end of the handle.

In order to prevent the handle from shaking left and right and fix the handle stroke of moving up and down, the back of the handle 3 is provided with a second axial convex column 33, the inner wall of the through groove of the holding rod 2 is provided with a limit groove clamped with the second convex column 33, the limit groove is longer than the second convex column 33, and the convex column moves up and down in the limit groove.

In order to facilitate the hose to enter the human body, the front end of the front end needle 5 is in a cone shape.

the tissue retractor 6 and the tubule 4 can be one of medical silicon rubber, a polytetrafluoroethylene membrane, a polyurethane membrane or a polyamide membrane; the holding rod 2, the handle 3 and the front end needle 5 are made of polyethylene materials; the metal wire and the spring are medical stainless metal wires.

When the product is produced, two metal wires respectively penetrate through the tube cavity of the front end needle, and are intersected and connected at one point outside the rear end face of the front end needle, and an excess metal wire is removed to form the inverted Y-shaped bifurcation character. And then the rear end metal wire firstly passes through the thin tube and then passes through the holding rod to be connected with the buckle of the handle. Then the front end of the thin tube is bonded with the rear end of the front end needle, and then the rear end of the thin tube is bonded with the holding rod. Then the spring is put into the cylindrical groove of the holding rod, the top end of the spring is clamped on the cylinder in the cylindrical groove, and the handle is inserted into the through groove of the holding rod, so that the annular groove of the convex column at the top end of the handle is matched with the spring. And finally, pulling out the redundant metal wire from the through hole on the circumferential surface of the front end needle, cutting off the redundant part, and leaving a part exposed. Finally, the tissue retractor is wound on the circumferential surface of the front end needle clockwise or anticlockwise, and the round holes at the two ends of the tissue retractor are respectively fixed on the exposed metal wires.

The tissue retractor is sent to the position near the focus of endoscopic surgery by using the pusher, the pull handle is pulled back, the metal wire is synchronously pulled back, the exposed part at the front end is pulled out, the tissue retractor is released near the focus, then the pull handle is loosened, and the pusher is pulled out. When the handle is loosened, the metal wire is returned due to the elastic force of the spring, a part of the metal wire is exposed on the circumferential surface of the front end needle, the tissue retractor can be bundled again, and the repeated conveying can be carried out.

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a tissue draw gear of supplementary scope treatment which characterized in that: the tissue retractor comprises a tissue retractor (6) and a pusher thereof, wherein the tissue retractor (6) is a dumbbell-shaped structure body which is made of flexible high polymer materials and provided with O-shaped rings at two ends and a middle connecting line; pusher includes front end needle (5), tubule (4), holding rod (2), handle (3) and wire (7), front end needle (5) are connected to tubule (4) front end, holding rod (2) is connected to the rear end, two lumen (51) are seted up to the inside axial of follow front end needle (5) rear end face, lumen (51) front end leads to the all surface shapes of front end needle and forms through-hole (52), handle (3) and holding rod (2) relative aversion swing joint, wire (7) are worn in lumen (51) of front end needle, the front end exposes front end needle (5) week surface, the both ends O type circle hole of tissue retractor (6) blocks respectively on wire (7) front end, wire (7) rear end passes tubule (4) cavity in, it is connected with handle (3) in holding rod (2) to wear.

2. The tissue traction device for assisting endoscopic therapy according to claim 1, wherein: the handle and the holding rod are movably connected in a relative displacement mode, namely, a through groove (21) with the length larger than that of the handle is dug in the middle lower portion of the holding rod (2), the T-shaped or I-shaped handle (3) is arranged in the through groove (21), and a spring (1) at the upper end of the handle (3) is connected to the inside of the holding rod (2) above.

3. The tissue traction device for assisting endoscopic therapy according to claim 2, wherein: an axial cylindrical groove (22) is arranged in the holding rod above the through groove (21), the spring (1) is arranged in the cylindrical groove (22), and the bottom end of the spring is connected to the top end of the handle (3).

4. The tissue traction device for assisting endoscopic therapy according to claim 3, wherein: the inner top wall of the cylindrical groove (22) is provided with a downward convex cylinder (23), the top of the handle (3) is provided with a first convex column (31), the top of the first convex column (31) is provided with a ring groove (32), the top end of the spring (1) is sleeved on the cylinder (23), and the lower end of the spring is clamped on the cylinder in the ring groove (32).

5. The tissue traction device for assisting endoscopic therapy according to claim 2, wherein: the back of the handle (3) is provided with a second axial convex column (33), the inner wall of the through groove of the holding rod (2) is provided with a limit groove which is matched with the second convex column (33) in a clamping way, the limit groove is longer than the second convex column (33), and the second convex column (33) moves up and down in the limit groove.

6. the tissue traction device for assisting endoscopic therapy according to claim 1, wherein: the front end of the front end needle (5) is in a cone shape.

7. The tissue traction device for assisting endoscopic therapy according to claim 1, wherein: through holes (52) leading the front end of the tube cavity to the peripheral surface of the front end needle are respectively arranged on the upper and lower opposite surfaces.

8. The tissue traction device for assisting endoscopic therapy according to claim 1, wherein: the front end of the metal wire (7) is forked, and the rear end of the metal wire is combined into one wire to form an inverted Y shape.

9. the tissue traction device for assisting endoscopic therapy according to claim 1, wherein: the front end of the metal wire (7) is bent with a hook.

10. The tissue traction device for assisting endoscopic therapy according to claim 1, wherein: the tissue retractor (6) and the tubule (4) are made of one of medical silicon rubber, a polytetrafluoroethylene film, a polyurethane film or a polyamide film, and the holding rod (2), the handle (3) and the front end needle (5) are made of polyethylene materials.