CN213310140U

CN213310140U - Incision knife for endoscopic submucosal dissection

Info

Publication number: CN213310140U
Application number: CN202022106216.XU
Authority: CN
Inventors: 杨铸锋; 张玎鑫; 王利民
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-06-01
Anticipated expiration: 2030-09-23

Abstract

The utility model relates to a scope submucosal dissection art is with incision sword, it includes: the rear end of the core rod is provided with a chute, the front end of the core rod is provided with a guide wire through hole, and the front end of the core rod is connected with a sheath; the sliding block is clamped in the sliding groove and can slide back and forth along the sliding groove, and a lead plug is arranged on the sliding block; one end of the sheath tube is connected with the sheath, the other end of the sheath tube is provided with a cutter head, the cutter head is connected with the sliding block through a guide wire penetrating through the sheath tube and the guide wire through hole, and the guide wire is connected with the guide wire plug; the sliding sleeve is sleeved on the sheath tube in a relatively sliding manner, a direction guide wire is connected between the outer end of the sliding sleeve and the outer end of the sheath tube, and the inner end of the sliding sleeve is connected with the sheath through a position adjusting device.

Description

Incision knife for endoscopic submucosal dissection

Technical Field

The utility model relates to a scope submucosal dissection art service equipment specifically is a scope submucosal dissection art is with cutting out sword.

Background

ESD is an effective means for treating superficial lesions of the gastrointestinal mucosa, often achieves a treatment result similar to that of a surgical operation, and has the advantages of being minimally invasive, not changing the structure of the gastrointestinal tract, avoiding surgical operation risks, reducing postoperative life quality degradation, and the like. ESD is an economical, safe and reliable method for treating superficial lesions of the digestive tract. ESD treatment has the advantage that no surgery is required to completely remove the cancerous tissue. ESD mucosal dissection is a technique in which a dissecting knife is used to dissect a diseased mucosa, thereby achieving the purpose of treating early canceration. However, the incision knife cannot be parallel to the diseased mucosa at a special part, the incision knife is perpendicular to the mucosa, the incision depth is difficult to control, the digestive tract perforation is easy to occur in the operation process, and serious complications are caused. Therefore, referring to the cutting knife used by the ERCP, the knife head can be pulled through the wire to change the direction of the knife head, so that the cutting direction is parallel to the mucous membrane layer, the safety degree is greatly improved, and the occurrence of postoperative perforation complications in the operation is reduced. And through setting up flush joint and seal cover, can circulate the flush fluid between sheath and sheath pipe and seal wire, wash oozing blood, mucus that produce in the operation, keep the field of vision clear.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a simple structure, convenient operation, tool bit direction are adjustable, be convenient for abluent scope submucosal under the art dissect the art with cutting off the sword is provided.

In order to solve the above problems, the utility model adopts the following technical proposal:

an incision knife for endoscopic submucosal dissection comprising:

the rear end of the core rod is provided with a chute, the front end of the core rod is provided with a guide wire through hole, and the front end of the core rod is connected with a sheath;

the sliding block is clamped in the sliding groove and can slide back and forth along the sliding groove, and a lead plug is arranged on the sliding block;

one end of the sheath tube is connected with the sheath, the other end of the sheath tube is provided with a cutter head, the cutter head is connected with the sliding block through a guide wire penetrating through the sheath tube and the guide wire through hole, and the guide wire is connected with the guide wire plug;

the sliding sleeve is sleeved on the sheath tube in a relatively sliding manner, a direction guide wire is connected between the outer end of the sliding sleeve and the outer end of the sheath tube, and the inner end of the sliding sleeve is connected with the sheath through a position adjusting device.

As a further improvement, the sheath lateral wall is equipped with the flushing joint who is linked together rather than, be equipped with the seal cover of rubber or silica gel material between sheath and the seal wire, the seal cover is located the flushing joint junction is inboard on the sheath.

As a further improvement, the sheath includes left sheath and right sheath that spiro union or card were established together, the left sheath link of left side sheath and the mutual spiro union of the right sheath link of right sheath or the card are established together, left side sheath link is located right side sheath link is inboard, be equipped with the seal cover in the left side sheath link, left side sheath is inherent the seal cover inboard has set firmly the fender ring, right side sheath internal fixation has kept off the ring.

As a further improvement, the position adjusting device includes the hinge sliding sleeve inner lateral wall department adjust the pole with set firmly in regulating block on the sheath lateral wall, it is equipped with the fixture block to adjust the pole free end, be equipped with along the sheath axis on the regulating block a plurality of with fixture block assorted draw-in groove.

As a further improvement of the utility model, an adjusting handle is fixedly arranged on the sliding block.

As a further improvement of the utility model, two finger holes for pushing and pulling are arranged on the adjusting handle.

As a further improvement of the utility model, the handle is fixedly arranged at the rear end of the core bar.

As a further improvement of the utility model, the sheath is made of hard material, and the core bar is integrally formed.

As a further improvement of the utility model, the direction wire is a memory alloy wire or a hard wire.

As a further improvement of the utility model, the free end of the guide wire is a memory alloy guide wire which can reset automatically.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the utility model has the advantages of being simple in structure and convenient in operation, can adjust the tool bit direction through setting up the direction wire, the tool bit passes through the direction wire and can stimulate, changes the direction of tool bit for cutting direction is parallel with the mucosa layer, and the degree of safety promotes greatly, has reduced the emergence of postoperative perforation complication in the art. And through setting up flush joint and seal cover, can circulate the flush fluid between sheath and sheath pipe and seal wire, wash oozing blood, mucus that produce in the operation, keep the field of vision clear.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view at a in fig. 1.

Fig. 3 is a partially enlarged schematic view at B in fig. 1.

Fig. 4 is a partially enlarged schematic view at C in fig. 3.

Fig. 5 is a partially enlarged schematic view at D in fig. 3.

Fig. 6 is a partially enlarged schematic view at E in fig. 1.

Wherein: the device comprises a core bar 1, a guide wire 1-1 through hole, a sliding groove 2, an adjusting handle 4, a handle 5, a sliding block 6, a conductive plug 7, a guide wire 8, a sheath 9, a left sheath 9-1 connecting end, a right sheath 9-2-1 connecting end, a flushing joint 10, a sliding sleeve 11, an adjusting rod 12, a clamping block 13, an adjusting block 14, a clamping groove 15, a sheath tube 16, a direction guide wire 17, a tool bit 18, a sealing sleeve 19 and a retaining ring 20.

Detailed Description

To make the objects, aspects and advantages of the present invention clearer and more fully described below with reference to the following detailed description, it is to be understood that the terms "center", "vertical", "horizontal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations and positional relationships based on the drawings, and are used merely for convenience of describing and simplifying the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

An incision knife for endoscopic submucosal dissection as shown in fig. 1-6, comprising:

the device comprises a core bar 1, wherein the rear end of the core bar 1 is provided with a chute 2, the front end of the core bar 1 is provided with a guide wire through hole 1-1, the front end of the core bar 1 is connected with a sheath 9, and the sheath 9 is made of hard materials and is integrally formed with the core bar 1;

the sliding block 6 is clamped in the sliding groove 2 and can slide back and forth along the sliding groove 2, and a lead plug 7 is arranged on the sliding block 6;

one end of the sheath tube 16 is fixedly connected with the free end of the sheath 9, the other end of the sheath tube is provided with a cutter head 18, the cutter head 18 is connected with the sliding block 6 through a guide wire 8 penetrating through the sheath tube 16 and the guide wire through hole 1-1, and the guide wire 8 is connected with the guide wire plug 7 in a contact manner;

the sliding sleeve 11 is sleeved on the sheath tube 16 in a relatively sliding manner, a direction guide wire 17 is connected between the outer end of the sliding sleeve and the outer end of the sheath tube 16, and the inner end of the sliding sleeve is connected with the sheath 9 through a position adjusting device. The position adjusting device comprises an adjusting rod 12 hinged to the inner end side wall of the sliding sleeve 11 and an adjusting block 14 fixedly arranged on the side wall of the sheath 9, a clamping block 13 is arranged at the free end of the adjusting rod 12, and a plurality of clamping grooves 15 matched with the clamping block 13 are formed in the adjusting block 14 along the axis of the sheath 9. The sliding sleeve 11 can move relative to the sheath 16, the angle can be adjusted by pulling the cutter head 18 through the direction guide line 17, and the position is fixed through the fixture block 13 and the clamping groove 15. As a further refinement, the position adjustment device can be designed for stepless adjustment.

The utility model has the advantages of being simple in structure and convenient in operation, 18 directions of tool bit can be adjusted through setting up direction wire 17, and tool bit 18 can stimulate through direction wire 17, changes the direction of tool bit 18 for cutting direction and mucosa layer are parallel or are other angles, and the degree of safety promotes greatly, has reduced the emergence of postoperative perforation complication in the art. As a further optimization, the direction wire 17 is a memory alloy wire or a hard wire. Or the free end of the guide wire 8 is a memory alloy guide wire capable of automatically resetting. Facilitating the resetting of the direction conductor 17.

In this embodiment, the side wall of the sheath 9 is provided with a flushing joint 10 communicated with the side wall, a sealing sleeve 19 made of rubber or silica gel is arranged between the sheath 9 and the guide wire 8, and the sealing sleeve 19 is located on the inner side of the joint of the flushing joint 10 on the sheath 9. The sheath 9 comprises a left sheath 9-1 and a right sheath 9-2 which are screwed or clamped together, a left sheath connecting end 9-1-1 of the left sheath 9-1 and a right sheath connecting end 9-2-1 of the right sheath 9-2 are screwed or clamped together, the left sheath connecting end 9-1-1 is positioned at the inner side of the right sheath connecting end 9-2-1, a sealing sleeve 19 is arranged in the left sheath connecting end 9-1-1, a retaining ring 20 is fixedly arranged at the inner side of the sealing sleeve 19 in the left sheath 9-1, and the retaining ring 20 is fixedly arranged in the right sheath 9-2. The left sheath 9-1 and the right sheath 9-2 are arranged, so that the sealing sleeve 19 is convenient to mount, a certain pressure exists between the sealing sleeve 19 and the guide wire 8, and flushing liquid is prevented from flowing out of the sliding groove 2 when the flushing joint 10 is flushed and cleaned. As another embodiment, the sealing sleeve 19 arranged on the sheath 9 is connected through a hose, when the flushing is needed, the hose and the sealing sleeve 19 are pressed against the guide wire 8 through external force, so that the sealing effect is achieved, and the sealing sleeve 19 and the guide wire 8 are kept in contact at other times without applying external force. Through the arrangement of the flushing connector 10 and the sealing sleeve 19, flushing liquid can be circulated among the sheath 9, the sheath tube 16 and the guide wire 8, and blood and mucus produced in the operation can be flushed, so that the visual field is kept clear.

An adjusting handle 4 is fixedly arranged on the sliding block 6. Two finger holes for pushing and pulling are arranged on the adjusting handle 4. The rear end of the core bar 1 is fixedly provided with a handle 5. The cutter head 18 is a T-shaped cutter, a needle cutter, an IT cutter, a hook cutter, a triangular cutter and the like, and the guide wire 8 is wrapped with an insulating layer.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.

Claims

1. An incision knife for endoscopic submucosal dissection is characterized by comprising:

the device comprises a core bar (1), wherein the rear end of the core bar (1) is provided with a chute (2), the front end of the core bar (1) is provided with a guide wire through hole (1-1), and the front end of the core bar (1) is connected with a sheath (9);

the sliding block (6) is clamped in the sliding groove (2) and can slide back and forth along the sliding groove (2), and a lead plug (7) is arranged on the sliding block (6);

one end of the sheath tube (16) is connected with the sheath (9), the other end of the sheath tube is provided with a cutter head (18), the cutter head (18) is connected with the sliding block (6) through a guide wire (8) penetrating through the sheath tube (16) and the guide wire through hole (1-1), and the guide wire (8) is connected with the guide wire plug (7);

the sliding sleeve (11) is sleeved on the sheath tube (16) in a relatively sliding manner, a direction guide wire (17) is connected between the outer end of the sliding sleeve and the outer end of the sheath tube (16), and the inner end of the sliding sleeve is connected with the sheath (9) through a position adjusting device.

2. The incision knife for endoscopic submucosal dissection according to claim 1, wherein the side wall of the sheath (9) is provided with a flushing joint (10) communicated with the side wall, a sealing sleeve (19) made of rubber or silica gel is arranged between the sheath (9) and the guide wire (8), and the sealing sleeve (19) is positioned on the inner side of the joint of the flushing joint (10) on the sheath (9).

3. The incision knife for endoscopic submucosal dissection according to claim 2, wherein the incision knife is a circular incision knife, the sheath (9) comprises a left sheath (9-1) and a right sheath (9-2) which are screwed or clamped together, the left sheath connecting end (9-1-1) of the left sheath (9-1) and the right sheath connecting end (9-2-1) of the right sheath (9-2) are mutually screwed or clamped together, the left sheath connecting end (9-1-1) is positioned at the inner side of the right sheath connecting end (9-2-1), a sealing sleeve (19) is arranged in the left sheath connecting end (9-1-1), a baffle ring (20) is fixedly arranged on the inner side of the sealing sleeve (19) in the left sheath (9-1), and a baffle ring (20) is fixedly arranged in the right sheath (9-2).

4. The incision knife for endoscopic submucosal dissection according to claim 1, wherein the position adjusting device comprises an adjusting rod (12) hinged at the inner end side wall of the sliding sleeve (11) and an adjusting block (14) fixedly arranged on the side wall of the sheath (9), a clamping block (13) is arranged at the free end of the adjusting rod (12), and a plurality of clamping grooves (15) matched with the clamping block (13) are arranged on the adjusting block (14) along the axis of the sheath (9).

5. The incision knife for endoscopic submucosal dissection according to claim 1, wherein said slider (6) is fixedly provided with an adjusting handle (4).

6. The incision knife for endoscopic submucosal dissection according to claim 5, wherein said adjusting handle (4) is provided with two finger holes for pushing and pulling.

7. The incision knife for endoscopic submucosal dissection according to claim 1, wherein a handle (5) is fixedly arranged at the rear end of the core bar (1).

8. The incision knife for endoscopic submucosal dissection according to claim 1, wherein said sheath (9) is made of hard material and is integrally formed with said core rod (1).

9. The incision knife for endoscopic submucosal dissection according to claim 1, wherein said direction wire (17) is a memory alloy wire or a hard wire.

10. The incision knife for endoscopic submucosal dissection according to claim 1, wherein the free end of the guide wire (8) is a memory alloy guide wire capable of automatic reduction.