CN214632242U

CN214632242U - Disposable forceps knife for endoscope

Info

Publication number: CN214632242U
Application number: CN202120031827.4U
Authority: CN
Inventors: 姚远; 张红艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-07
Filing date: 2021-01-07
Publication date: 2021-11-09
Anticipated expiration: 2031-01-07

Abstract

The utility model discloses a disposable pincers sword for endoscope, include: the hemostatic forceps, the needle knife, the connecting sheet, the traction steel wire, the outer sleeve, the needle knife limiting sleeve and the control handle; the utility model discloses cutting the mucosa and cutting the sword and hemostatic forceps integration in an apparatus, the function of cutting the sword is realized to the spacing sleeve pipe of forward propelling movement needle sword, cuts and peels off the treatment, if bleed appears, need not change the apparatus, as long as the simple transform of cutting the sword to hemostatic forceps just can be accomplished to the spacing sleeve pipe of needle sword of pulling back, carries out quick hemostasis treatment, accomplishes the very first time hemostasis and handles, reaches quick accurate hemostatic purpose, improves the success rate of stanching, reduces the operation risk.

Description

Disposable forceps knife for endoscope

Technical Field

The utility model relates to a surgical instrument of a soft endoscope, in particular to a disposable forceps knife for an endoscope.

Background

At present, the operation of digestive tract disease (such as Endoscopic Submucosal Dissection (ESD)) by a soft endoscope is commonly carried out by a disposable mucosa incision knife (high-frequency incision knife) and a disposable hemostatic forceps (thermal biopsy forceps). The incision knife is used for mucosa incision and submucosal layer stripping, and the hemostatic forceps or the thermal biopsy forceps are used for hemostasis treatment in the operation. Because the pipe diameter of the flexible endoscope channel for treatment is limited, generally 3.2mm, only one instrument can be used once, if rapid bleeding occurs in the process of incision or stripping in the operation, the incision knife needs to be pulled out when the incision knife can not effectively stop bleeding, and the hemostatic forceps are replaced to stop bleeding for treatment. The time is needed for replacing the equipment, the optimal hemostasis opportunity can be missed in the process of replacing the equipment, the hemostasis success rate and the hemostasis effect are influenced, and the surgical treatment risk is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a disposable pincers sword for endoscope, it is as an organic whole to collect mucosa incision sword and hemostatic forceps function, from cutting and peeling off the in-process that the mucosa operation changed the hemostasis operation into, need not change the apparatus, makes things convenient for the very first time to stanch and handles, improves the success rate of stanching, reduces the operation risk.

The technical scheme of the utility model is that: a disposable forceps knife for an endoscope, comprising: the hemostatic forceps comprise hemostatic forceps 1, a needle knife 2, a connecting sheet 3, a traction steel wire 4, an outer sleeve 5, a needle knife limiting sleeve 6 and a control handle 7;

the hemostatic forceps 1 comprises a left half forceps mouth 1a, a right half forceps mouth 1b, a forceps handle 1c and a first pin shaft 1d, wherein the right half forceps mouth 1b and the forceps handle 1c are integrally formed and are parallel to each other in central axis, the left half forceps mouth 1a is movably connected to the forceps handle 1c in a crossed mode through the first pin shaft 1d, and a through hole 1f is formed in the right half forceps mouth 1b in the direction from the forceps mouth tip to the right side end;

the needle knife 2 is an arched elastic piece, the rear end of the needle knife is movably connected to the right side part of the forceps handle 1c through a second pin shaft 8, and the front end of the needle knife extends into the through hole 1f from the right side end of the right forceps mouth 1 b;

the front end of the connecting sheet 3 is movably connected with the rear end of the left half tong nozzle 1a through a third pin shaft 9, and the rear end of the connecting sheet is movably connected with the front end of the traction steel wire 4 through a fourth pin shaft 10;

the outer sleeve 5 comprises a sleeve piece 5a and a metal end 5b fixed at the front end of the sleeve piece, and the rear end of the forceps handle 1c is arranged in the metal end 5b and can rotate relative to the metal end;

the control handle 7 comprises a handle rod seat 7a and a driving handle 7b sleeved outside the handle rod seat 7a, annular grooves 7c communicated with the inside are formed in the directions of two sides of the handle rod seat 7a, the front end of the handle rod seat 7a is sleeved outside the rear end of the sleeve piece 5a, the traction steel wire 4 is positioned inside the forceps handle 1c, the outer sleeve 5 and the handle rod seat 7a, the rear end of the traction steel wire 4 is fixed on the driving handle 7b through the annular grooves 7c, and the driving handle 7b can move back and forth on the handle rod seat 7a to drive the traction steel wire 4 to move back and forth, so that the left half forceps mouth 1a is driven to open and close relative to the right half forceps mouth 1 b;

the needle-knife limiting sleeve 6 is sleeved outside the outer sleeve 5 and can move back and forth relative to the outer sleeve 5, the needle-knife 2 is pressed to slide forward along the through hole 1f in the forward movement process of the needle-knife limiting sleeve 6 and extends out of the jaw tip of the right half jaw 1b, and the pressing on the needle-knife 2 is relieved in the backward movement process of the needle-knife limiting sleeve 6, so that the needle-knife 2 slides backward along the through hole 1f under the action of the elasticity of the needle-knife 2 and retracts to an arched state.

Furthermore, a blocking piece 2a is arranged at the front end of the needle knife 2 to form a T-shaped structure, the diameter of the blocking piece 2a is larger than that of the through hole 1f, and a blocking piece accommodating groove 1e is formed in the jaw tip of the right half jaw 1 b.

Further, a vertical groove 1g is formed in the right side end of the right half clamp mouth 1 b.

Further, the rear end of the handle bar seat 7a and the left and right side portions of the driving handle 7b are of ferrule structures.

Further, the transverse width of the right half tong nozzle 1b is larger than that of the left half tong nozzle 1 a.

Furthermore, the center of the traction steel wire 4 is deviated to one side of the movable left half tong mouth 1 a.

Furthermore, the opening angle of the left half forceps mouth 1a and the right half forceps mouth 1b of the hemostatic forceps 1 reaches 80-90 degrees, and when the maximum opening angle is reached, the distance between the forceps mouth tips of the left half forceps mouth 1a and the right half forceps mouth 1b is 5-6 mm.

Furthermore, when the needle knife 2 is pressed to the final position by the needle knife limiting sleeve 6, the front end of the needle knife 2 protrudes out of the forceps mouth tip of the right forceps mouth 1b by 2 mm.

Further, the rear 2/3 part of the needle knife 2 is coated with an insulating material.

Furthermore, the outer diameter of the forceps knife is not more than 2.8mm, and the length of the forceps knife is 2000-2300 mm.

The utility model discloses following profitable effect has:

the utility model realizes the integration of two instruments of a mucosa incision knife and a hemostatic forceps, can realize the rapid switching of mucosa incision and hemostatic treatment in the treatment process, does not need to change the instrument, saves the precious hemostatic time, grasps the gold opportunity of hemostatic treatment, realizes the precise hemostasis at the first time, improves the success rate of hemostasis, and reduces the risk in the operation process; meanwhile, the use cost of the instrument can be reduced by combining two instruments into one.

Drawings

Fig. 1 is a first schematic structural diagram (in a state of using a needle knife) of the present invention;

fig. 2 is a second structural schematic view (the needle knife limiting sleeve moves backwards to relieve the state of pressing the needle knife);

fig. 3 is a third schematic structural view (in a state of using hemostatic forceps) of the present invention;

in the figure: 1. a hemostatic forceps; 1a, a left half tong mouth; 1b, a right half tong mouth; 1c, a forceps handle; 1d, a first pin shaft; 1e, a separation blade accommodating groove; 1f, through holes; 1g, vertical grooves; 2. a needle knife; 2a, a baffle plate; 3. connecting sheets; 4. a traction wire; 5. an outer sleeve; 5a, a sleeve piece; 5b, a metal end; 6. a needle knife limiting sleeve; 7. a control handle; 7a, a handle bar seat; 7b, a driving handle; 7c, a ring groove; 8. a second pin shaft; 9. a third pin shaft; 10. and a fourth pin shaft.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

As shown in fig. 1 to 3, a disposable forceps for an endoscope includes: hemostatic forceps 1, needle knife 2, connecting piece 3, traction steel wire 4, outer sleeve 5, needle knife limiting sleeve 6 and control handle 7.

Hemostatic forceps 1 includes half left pincers mouth 1a, half right pincers mouth 1b, pincers handle 1c and first round pin axle 1d, and half right pincers mouth 1b sets up and just both axis are parallel with pincers handle 1c integrated into one piece, and half left pincers mouth 1a is through first round pin axle 1d cross swing joint on pincers handle 1c, sets up the through-hole 1f from pincers mouth point to right side end direction on half right pincers mouth 1 b.

The needle knife 2 is an arc-shaped elastic piece, the rear end of the needle knife is movably connected to the right side part of the forceps handle 1c through a second pin shaft 8, and the front end of the needle knife extends into the through hole 1f from the right side end of the right forceps mouth 1 b.

The front end of the connecting piece 3 is movably connected with the rear end of the left half tong nozzle 1a through a third pin shaft 9, and the rear end of the connecting piece is movably connected with the front end of the traction steel wire 4 through a fourth pin shaft 10.

The outer sleeve 5 comprises a sleeve piece 5a and a metal end 5b fixed at the front end of the sleeve piece, and the rear end of the forceps handle 1c is arranged in the metal end 5b and can rotate relative to the metal end.

The control handle 7 comprises a handle rod seat 7a and a driving handle 7b sleeved outside the handle rod seat 7a, annular grooves 7c communicated with the inside are formed in the directions of two sides of the handle rod seat 7a, the front end of the handle rod seat 7a is sleeved outside the rear end of the sleeve piece 5a, the traction steel wire 4 is positioned inside the forceps handle 1c, the outer sleeve 5 and the handle rod seat 7a, the rear end of the traction steel wire 4 is fixed on the driving handle 7b through the annular grooves 7c, and the driving handle 7b can move back and forth on the handle rod seat 7a to drive the traction steel wire 4 to move back and forth, so that the left half forceps mouth 1a is driven to move open and close relative to the right half forceps mouth 1 b.

The needle-knife limiting sleeve 6 is sleeved outside the outer sleeve 5 and can move back and forth relative to the outer sleeve 5, the needle-knife 2 is pressed to slide forward along the through hole 1f in the forward movement process of the needle-knife limiting sleeve 6 and extends to the jaw tip of the right half jaw 1b, and the pressing on the needle-knife 2 is released in the backward movement process of the needle-knife limiting sleeve 6, so that the needle-knife 2 slides backward along the through hole 1f under the action of the self elasticity and retracts to restore to the bow state.

In the embodiment of the utility model, the front end of the needle knife 2 is provided with a baffle piece 2a to form a T-shaped structure, the diameter of the baffle piece 2a is larger than that of the through hole 1f, the needle knife 2 is prevented from sliding off the through hole 1f, and the T-shaped structure can also facilitate the cutting of tissues; a separation blade accommodating groove 1e is formed in the forceps tip of the right forceps mouth 1b, so that the needle knife 2 can be accommodated conveniently when the hemostatic forceps 1 is used.

In the embodiment of the utility model, vertical groove 1g has been seted up to right half pincers mouth 1b right side end, gets into in the vertical groove 1g when needle sword 2 is oppressed by needle sword limiting sleeve 6.

In the embodiment of the present invention, the rear end of the handle bar seat 7a and the left and right sides of the driving handle 7b are both ferrule structures.

In the embodiment of the present invention, the lateral width of the right half pincer nozzle 1b is greater than the lateral width of the left half pincer nozzle 1 a.

In the embodiment of the present invention, the center of the traction wire 4 is deviated to the movable left half pincer mouth 1a side, and a space is reserved for the second pin shaft 8 of the connecting needle knife 2.

In the embodiment of the present invention, the opening angle of the left half forceps mouth 1a and the right half forceps mouth 1b of the hemostatic forceps 1 reaches 80 to 90 degrees, and when the maximum opening angle is reached, the distance between the forceps mouth tips of the left half forceps mouth 1a and the right half forceps mouth 1b is 5 to 6 mm.

In the embodiment of the present invention, when the needle knife 2 is pressed to the final position by the needle knife limiting sleeve 6, the front end of the needle knife 2 protrudes out of the right half forceps mouth 1b and the forceps mouth tip is 2 mm.

In the embodiment of the present invention, the rear 2/3 part of the needle knife 2 is coated with an insulating material to prevent the arched part of the needle knife 2 from causing additional side damage to the mucosa.

In the embodiment of the present invention, the outer diameter of the pincer-like blade is not greater than 2.8mm, and the length is 2000-2300 mm.

In the embodiment of the present invention, the left side of the clamp handle 1c is semi-closed, so as to prevent the traction wire 4 from deviating to the movable clamp mouth side.

In the embodiment of the present invention, when the left half forceps mouth 1a and the right half forceps mouth 1b are closed, the whole hemostatic forceps 1 is cylindrical.

In the embodiment of the utility model, the traction steel wire 4 is still connected with the electrode jack, realizes the high frequency electric conduction.

The working principle of the utility model is as follows:

when the hemostatic forceps 1 is in a closed state, the needle-knife limiting sleeve 6 is pushed forwards, the needle knife 2 is pressed to straighten, slide along the through hole 1f and stretch forwards, the needle-knife limiting sleeve 6 wraps the hemostatic forceps 1 to play an insulating role, and the function of mucosa incision knife is realized, as shown in fig. 1; the needle-knife limiting sleeve 6 is pulled back, the package of the hemostatic forceps 1 and the compression of the needle-knife 2 are relieved, and the needle-knife 2 restores to be arched and retracts to the original shape, as shown in fig. 2; the thumb is hung on the loop at the rear end of the handle rod seat 7a, the forefinger and the middle finger are hung on the loops at the two sides of the driving handle 7b, the driving handle 7b is pushed to move forwards and backwards, and the opening and closing of the hemostatic forceps 1 are further controlled, so that the functions of the hemostatic forceps are realized, as shown in fig. 3; furthermore, when the handle bar base 7a is rotated, the rotation of the hemostat 1 can be realized.

The utility model discloses cutting the mucosa and cutting the sword and hemostatic forceps integration in an apparatus, the function that the spacing sleeve pipe 6 of propelling movement needle sword realized the mucosa and cut the sword forward, cut and peel off the treatment, if bleed appears, need not change the apparatus, as long as the simple transform of cutting the sword to hemostatic forceps can just be accomplished by cutting the sword to spacing sleeve pipe 6 of pull-back needle sword, carry out quick hemostasis treatment, accomplish the very first time hemostasis and handle, reach quick accurate hemostatic purpose, improve the success rate of hemostasis, reduce the operation risk.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A disposable forceps for an endoscope, comprising: the hemostatic forceps comprise hemostatic forceps (1), a needle knife (2), a connecting sheet (3), a traction steel wire (4), an outer sleeve (5), a needle knife limiting sleeve (6) and a control handle (7);

the hemostatic forceps (1) comprises a left half forceps mouth (1a), a right half forceps mouth (1b), a forceps handle (1c) and a first pin shaft (1d), wherein the right half forceps mouth (1b) and the forceps handle (1c) are integrally formed and are parallel to the central axis of the left half forceps mouth and the forceps handle, the left half forceps mouth (1a) is movably connected to the forceps handle (1c) in a crossed mode through the first pin shaft (1d), and a through hole (1f) in the direction from the forceps mouth tip to the right side end is formed in the right half forceps mouth (1 b);

the needle knife (2) is an arched elastic piece, the rear end of the needle knife is movably connected to the right side part of the forceps handle (1c) through a second pin shaft (8), and the front end of the needle knife extends into the through hole (1f) from the right side end of the right forceps mouth (1 b);

the front end of the connecting sheet (3) is movably connected with the rear end of the left half tong nozzle (1a) through a third pin shaft (9), and the rear end of the connecting sheet is movably connected with the front end of the traction steel wire (4) through a fourth pin shaft (10);

the outer sleeve (5) comprises a sleeve piece (5a) and a metal end (5b) fixed at the front end of the sleeve piece, and the rear end of the clamp handle (1c) is arranged in the metal end (5b) and can rotate relative to the metal end;

the control handle (7) comprises a handle rod seat (7a) and a driving handle (7b) sleeved outside the handle rod seat (7a), annular grooves (7c) communicated with the inside are formed in the directions of the two sides of the handle rod seat (7a), the front end of the handle rod seat (7a) is sleeved outside the rear end of the sleeve piece (5a), the traction steel wire (4) is located inside the forceps handle (1c), the outer sleeve (5) and the handle rod seat (7a), the rear end of the traction steel wire (4) is fixed on the driving handle (7b) through the annular grooves (7c), the driving handle (7b) can move back and forth on the handle rod seat (7a) to drive the traction steel wire (4) to move back and forth, so that the left half forceps mouth (1a) is driven to move open and close relative to the right half forceps mouth (1 b);

the needle knife limiting sleeve (6) is sleeved outside the outer sleeve (5) and can move back and forth relative to the outer sleeve (5), the needle knife (2) is pressed to slide forward along the through hole (1f) in the forward movement process of the needle knife limiting sleeve (6) and extends out of the jaw tip of the right half jaw (1b), and the needle knife (2) is relieved from being pressed in the backward movement process of the needle knife limiting sleeve (6), so that the needle knife (2) slides backward along the through hole (1f) under the action of self elasticity and retracts to an arched state.

2. A disposable forceps for endoscope according to claim 1, characterized in that the needle blade (2) is provided at the front end thereof with a stopper (2a) forming a T-shaped structure, the diameter of the stopper (2a) is larger than that of the through hole (1f), and a stopper receiving groove (1e) is formed at the tip of the right half forceps nose (1 b).

3. A disposable forceps tool for endoscopes according to claim 1, characterized in that the right side end of the right half jaw (1b) is opened with a vertical groove (1 g).

4. A disposable forceps for endoscope according to claim 1, characterized in that the rear end of the handle bar base (7a) and the right and left side portions of the driving handle (7b) are formed of ferrules.

5. An endoscopic disposable forceps according to claim 1, characterized in that the right half of the forceps tip (1b) has a transverse width larger than that of the left half of the forceps tip (1 a).

6. An endoscopic disposable forceps according to claim 1, characterized in that the pull wire (4) is offset centrally to the movable left jaw half (1 a).

7. The disposable forceps for endoscope according to claim 1, wherein the opening angle of the left half forceps tip (1a) and the right half forceps tip (1b) of the hemostatic forceps (1) is 80 to 90 degrees, and the distance between the forceps tip of the left half forceps tip (1a) and the forceps tip of the right half forceps tip (1b) is 5 to 6mm when the maximum opening angle is reached.

8. An endoscopic disposable forceps according to claim 1, characterized in that when the needle-knife (2) is pressed to the final position by the needle-knife limiting sleeve (6), the front end of the needle-knife (2) protrudes 2mm from the tip of the right forceps mouth (1 b).

9. A disposable endoscopic forceps according to claim 1, in which the rear 2/3 portion of the needle blade (2) is treated with an insulating material.

10. A disposable endoscope forceps according to claim 1, characterized in that the forceps has an outer diameter of not more than 2.8mm and a length of 2000 to 2300 mm.