CN215228172U - Bidirectional grasping forceps for digestive endoscope - Google Patents

Abstract

The utility model discloses a based on two-way nipper is used to gastroenterology, including outer tube, fixed handle and activity handle, the top of fixed handle and the bottom fixed connection of outer tube, the activity is with fixed swing joint, the inside swing joint of outer tube has interior pole, the side surface of interior pole is provided with fixed pipe, fixed pipe is connected through even board and activity, fixed being connected through first spring and activity, the left end fixedly connected with locating frame of outer tube. This based on two-way nipper is used to digestive endoscopy, through outer tube, fixed handle, activity handle, first spring, interior pole, fixed pipe, even board, posting, the fixed pincers body, slider, the movable pincers body, baffle, second spring, latch and the mutual cooperation between the connection piece, reached the effect that makes nipper and tissue contact surface pressure evenly distributed, solved nipper pivot department and the too concentrated problem of contact surface stress of tissue.

Description

Bidirectional grasping forceps for digestive endoscope

Technical Field

The utility model relates to a nipper technical field specifically is a based on two-way nipper is used to digestive endoscopy.

Background

The laparoscopic surgery is gradually replacing the traditional surgery because of small trauma, fast postoperative recovery, small postoperative infection rate and the like, but in the laparoscopic surgery, surgeons lack 3D vision and mechanical feedback, and the risk in the surgery is increased, an ideal laparoscopic grasper can grasp tissues smoothly without damaging the tissues, but because the laparoscopic instrument has very small size, the laparoscopic grasper is easy to generate larger stress and damage the tissues, the grasping performance of the laparoscopic instrument is influenced by the two aspects of the shape and the closing mode of the grasper, the shape of the grasper is the shape of the latch on the surface of the grasper, so the grasper is easy to avoid changing, but the closing mode of the grasper is mostly a V-shaped grasper, the stress of the grasper near a rotating shaft is the largest, and the grasper is easy to damage when grasping human tissues, so a forceps body capable of evenly distributing the pressure of the contact surface of the grasper and the tissues needs to be researched, so as to meet the operation requirements of users.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a based on two-way nipper is used to digestion scope possesses the advantage that makes nipper and tissue contact surface pressure evenly distributed, has solved the problem that the contact surface stress of nipper pivot department and tissue is too concentrated.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: a bidirectional grasping forceps based on a digestive endoscope comprises an outer tube, a fixed handle and a movable handle, wherein the top end of the fixed handle is fixedly connected with the bottom of the outer tube, the movable handle is movably connected with the fixed handle, the inner pipe is movably connected inside the outer pipe, the side surface of the inner pipe is provided with the fixed pipe, the fixed pipe is connected with the movable handle through the connecting plate, the fixed handle is connected with the movable handle through the first spring, the left end of the outer tube is fixedly connected with a positioning frame, the inner bottom wall of the positioning frame is fixedly connected with a fixed clamp body, the positioning frame is connected with the movable clamp body through a sliding block, one side of the sliding block, which is far away from the movable clamp body, is fixedly connected with a baffle plate, the movable clamp body is connected with the inner top wall of the positioning frame through a second spring, the tops of the fixed clamp body and the bottoms of the movable clamp body are provided with clamping teeth, and the movable clamp body is connected with the inner rod through a connecting sheet.

Preferably, a thread groove is formed in the side surface of the inner rod, and the side surface of the inner rod is movably connected with the inside of the fixed pipe.

Preferably, the right end of the first spring is fixedly connected with the left side of the movable handle, the left end of the first spring is fixedly connected with the right side of the fixed handle, the first spring can drive the inner rod to move left by forcing the movable handle to reset until the movable clamp body returns to the original position, and preparation is made for the next clamping of the grasping clamp.

Preferably, one side of the slide block, which is far away from the inner wall of the positioning frame, is fixedly connected with the side face of the movable clamp body, the inner walls of the front side and the rear side of the positioning frame are respectively provided with a limiting slide way, the slide block is positioned inside the limiting slide way, and the slide block and the limiting slide way play a role in limiting the moving track of the movable clamp body, so that the bottom surface of the movable clamp body is always parallel to the bottom surface of the fixed clamp body when moving, and the uniform stress distribution between the clamp body and the tissue contact surface is ensured.

Preferably, the inside swing joint of slider has the pulley, the pulley is located the inside of spacing slide, and the pulley has reduced the frictional force between slider and spacing slide, prevents that the condition of card pause from appearing when the slider removes.

Preferably, the inner portion of the outer tube is fixedly connected with a positioning block, the inner portion of the positioning block and the inner portion of the positioning frame are both provided with a communicating groove, and the connecting sheet is located inside the communicating groove.

Compared with the prior art, the utility model provides a based on two-way nipper is used to gastroenterology possesses following beneficial effect:

1. this based on two-way nipper is used to digestive endoscopy, through outer tube, fixed handle, activity handle, first spring, interior pole, fixed pipe, even board, posting, the fixed pincers body, slider, the movable pincers body, baffle, second spring, latch and the mutual cooperation between the connection piece, reached the effect that makes nipper and tissue contact surface pressure evenly distributed, solved nipper pivot department and the too concentrated problem of contact surface stress of tissue.

2. This based on two-way nipper for digestion scope, through location frame, fixed pincers body, slider, the activity pincers body, spacing slide and the mutual cooperation between the pulley, when connection piece pulling activity pincers body moves down, the pulley can reduce the frictional force between slider and spacing slide, has reached the effect that prevents the activity pincers body and take place the card when removing, has solved when the frictional force between slider and spacing slide is great, and the activity pincers body is moving down the problem that the in-process probably takes place the card and pause.

Drawings

FIG. 1 is a partial cross-sectional view of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the movable clamp body of the present invention.

Wherein: 1. an outer tube; 2. a fixed handle; 3. a movable handle; 4. a first spring; 5. an inner rod; 6. a fixed tube; 7. connecting plates; 8. a positioning frame; 9. fixing the clamp body; 10. a slider; 11. a movable clamp body; 12. a limiting slide way; 13. a pulley; 14. a baffle plate; 15. a second spring; 16. clamping teeth; 17. connecting sheets; 18. positioning blocks; 19. a communicating groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a pair of two-way grasping forceps for a digestive endoscope comprises an outer tube 1, a fixed handle 2 and a movable handle 3, wherein the top end of the fixed handle 2 is fixedly connected with the bottom of the outer tube 1, the movable handle 3 is movably connected with the fixed handle 2, the right side of the fixed handle 2 is fixedly connected with a fixed shaft, the left side of the movable handle 3 is provided with a hinged hole, the fixed shaft is positioned inside the hinged hole, the inner tube 5 is movably connected inside the outer tube 1, the side surface of the inner tube 5 is provided with a fixed tube 6, the side surface of the inner tube 5 is provided with a thread groove, the side surface of the inner tube 5 is movably connected with the inside of the fixed tube 6, but only the side surface of the inner tube 5 close to the right end is provided with the thread groove, the fixed tube 6 is an internal thread tube, so that the inner tube 5 is actually in thread connection with the fixed tube 6, the fixed tube 6 is connected with the movable handle 3 through a connecting plate 7, one side of the connecting plate 7 far away from the movable handle 3 is hinged with the fixed tube 6, one side that even board 7 kept away from fixed pipe 6 is articulated 3 with the activity, and is fixed 2 be connected 3 with the activity through first spring 4, the right-hand member of first spring 4 and the activity left side fixed connection of 3, the left end of first spring 4 and the fixed right side fixed connection of 2, first spring 4 is in compression state this moment.

The left end fixedly connected with locating frame 8 of outer tube 1, the interior diapire fixedly connected with fixed pincers body 9 of locating frame 8, locating frame 8 is connected with the activity pincers body 11 through slider 10, slider 10 keeps away from one side and the activity pincers body 11 side fixed connection of the 8 inner walls of locating frame, spacing slide 12 has all been seted up to the inner wall of both sides around the locating frame 8, slider 10 is located the inside of spacing slide 12, the quantity of spacing slide 12 is four equally, be furnished with a slider 10 in each spacing slide 12, activity pincers body 11 is located the upside of fixed pincers body 9, slider 10's quantity is total four, per two are a set of, every group all uses the horizontal central line of activity pincers body 11 as the symmetry axis symmetric distribution, the inside swing joint of slider 10 has pulley 13, each slider 10's inside all has a pulley 13.

The pulley 13 is positioned inside the limit slide 12, and through the mutual matching among the positioning frame 8, the fixed caliper body 9, the slider 10, the movable caliper body 11, the limit slide 12 and the pulley 13, when the connecting sheet 17 pulls the movable caliper body 11 to move downwards, the pulley 13 can reduce the friction force between the slider 10 and the limit slide 12, so as to achieve the effect of preventing the movable caliper body 11 from being stuck during the movement, and solve the problem that the movable caliper body 11 may be stuck during the downward movement when the friction force between the slider 10 and the limit slide 12 is large, one side of the slider 10 far away from the movable caliper body 11 is fixedly connected with a baffle 14, one side of the baffle 14 close to the movable caliper body 11 is movably connected with the side of the positioning frame 8, the movable caliper body 11 is connected with the inner top wall of the positioning frame 8 through a second spring 15, at this time, the top of the fixed caliper body 9 and the bottom of the movable caliper body 11 are both provided with latch 16, the movable clamp body 11 is connected with the inner rod 5 through the connecting sheet 17, the connecting sheet 17 is a metal elastic sheet, the elastic sheet has good toughness, the bending resistance is realized, the positioning block 18 is fixedly connected to the inner part of the outer tube 1, the communicating groove 19 is formed in the inner part of the positioning block 18 and the inner part of the positioning frame 8, the connecting sheet 17 is positioned in the communicating groove 19, the movable clamp body is fixed by the outer tube 1 and the fixing handle 2 and the movable handle 3, the first spring 4, the inner rod 5, the fixing tube 6, the connecting plate 7, the positioning frame 8, the fixed clamp body 9, the sliding block 10, the movable clamp body 11, the baffle 14, the second spring 15 and the connecting sheet 17 are matched with each other, the effect of uniformly distributing the pressure of the contact surfaces of the grasping clamp and tissues is achieved, and the problem that the stress of the contact surfaces of the rotating shaft of the grasping clamp and the tissues is too concentrated is solved.

When the multifunctional grasping forceps are used, the forceps head of the grasping forceps is firstly stretched into a patient body, after the forceps head is moved to a position where tissues are to be clamped, the tissues at the position are clamped between the fixed forceps body 9 and the movable forceps body 11, the movable forceps body 3 is pressed to be close to the fixed forceps body 2, the movable forceps body 3 can drive the connecting piece 17 to move right through the inner rod 5, so that the movable forceps body 11 is forced to move downwards until the tissues at the affected part are clamped by the fixed forceps body 9 and the movable forceps body 11, at the moment, the moving track of the movable forceps body 11 is vertical to the surface of the clamped tissues, the pressure between the grasping forceps and the contact surface of the clamped tissues is evenly distributed, the condition that the grasping forceps are subjected to stress concentration is prevented, and the tissues are prevented from being clamped by the grasping forceps.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a two-way nipper for endoscope based on digestion, includes outer tube (1), fixed (2) and activity (3), its characterized in that: the top end of the fixed handle (2) is fixedly connected with the bottom of the outer tube (1), the movable handle (3) is movably connected with the fixed handle (2), the inner part of the outer tube (1) is movably connected with the inner rod (5), the side surface of the inner rod (5) is provided with the fixed tube (6), the fixed tube (6) is connected with the movable handle (3) through the connecting plate (7), the fixed handle (2) is connected with the movable handle (3) through the first spring (4), the left end of the outer tube (1) is fixedly connected with the positioning frame (8), the inner bottom wall of the positioning frame (8) is fixedly connected with the fixed clamp body (9), the positioning frame (8) is connected with the movable clamp body (11) through the sliding block (10), one side of the sliding block (10) far away from the movable clamp body (11) is fixedly connected with the baffle (14), the movable clamp body (11) is connected with the inner top wall of the positioning frame (8) through the second spring (15), the clamp teeth (16) are arranged at the top of the fixed clamp body (9) and the bottom of the movable clamp body (11), and the movable clamp body (11) is connected with the inner rod (5) through a connecting sheet (17).

2. The bi-directional grasper for digestive endoscopy based on claim 1, wherein: the side surface of the inner rod (5) is provided with a thread groove, and the side surface of the inner rod (5) is movably connected with the inside of the fixed pipe (6).

3. The bi-directional grasper for digestive endoscopy based on claim 1, wherein: the right end of the first spring (4) is fixedly connected with the left side of the movable handle (3), and the left end of the first spring (4) is fixedly connected with the right side of the fixed handle (2).

4. The bi-directional grasper for digestive endoscopy based on claim 1, wherein: one side of the inner wall of the positioning frame (8) is far away from the sliding block (10) and is fixedly connected with the side face of the movable clamp body (11), the inner walls of the front side and the rear side of the positioning frame (8) are provided with limiting slide ways (12), and the sliding block (10) is located inside the limiting slide ways (12).

5. The bi-directional grasper for digestive endoscopy based on claim 4, wherein: the inside swing joint of slider (10) has pulley (13), pulley (13) are located the inside of spacing slide (12).

6. The bi-directional grasper for digestive endoscopy based on claim 1, wherein: the inner portion of the outer tube (1) is fixedly connected with a positioning block (18), communicating grooves (19) are formed in the inner portion of the positioning block (18) and the inner portion of the positioning frame (8), and the connecting sheet (17) is located in the communicating grooves (19).

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