CN210631277U

CN210631277U - Medical multi-jaw forceps

Info

Publication number: CN210631277U
Application number: CN201920365104.0U
Authority: CN
Inventors: 唐志; 范茗侨; 冷德嵘; 李常青; 刘春俊
Original assignee: Micro Tech Nanjing Co Ltd
Current assignee: Micro Tech Nanjing Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-05-29
Anticipated expiration: 2029-03-21

Abstract

The application provides a medical multijaw pincers for the alimentary canal is through stopping bleeding and tissue suture under the endoscope guide, multijaw pincers include that a plurality of tong arms can open relatively respectively and close to realize the tissue tractive of big surface of a wound, can be applied to bigger surface of a wound for the pincers or the clip of traditional fixed opening size, because its simple structure, easily make, low cost, can realize repeated switching, the part is few with low costs, easy to operate, be convenient for release, consequently can shorten operation time, improve the operation success rate and reduce the use quantity of surgical instruments.

Description

Medical multi-jaw forceps

Technical Field

The application relates to the technical field of medical instruments, in particular to a medical multi-claw clamp.

Background

In recent years, the digestive endoscopy treatment technology is rapidly developed, the detection rate of digestive tract diseases is higher and higher, the digestive tract bleeding is more and more, and more treatment schemes are provided through the digestive endoscopy technology. The cure rate of EMR (endoscopic mucosal resection) and ESD (endoscopic mucosal dissection) under an endoscope to early canceration is higher and higher, and early treatment is a development direction of the industry. As compared with developed countries in which endoscopes such as Japan are applied, China has the practical problems of late introduction time, low general investigation rate and the like, the method still has the problem that a large lesion part (such as interstitial tumor >50cm) is required to be completely removed in the middle stage of detection in the actual treatment process. The existing ESD endoscope technology can safely and completely peel and excise, but the large wound surface needs to be sutured in time after operation, otherwise, the postoperative recovery of a patient is seriously and adversely affected.

Because the operating space under the endoscope is small, the working cavity channel passing through the endoscope is small, the opening width of the existing product which is opened after reaching a lesion part and is positioned to the limit in the physiological bending of a human body is limited, generally 11mm, the existing product can not be forced to the 50mm overlarge wound surface, an endoscope doctor needs to carry out purse-string suture, namely, an annular plastic ring is screwed firstly, then the existing small-opening pliers or clips are placed in a piling mode along the plastic ring on the periphery of the wound surface, and finally the tail part of the ring is hooked by a releaser hook special for the plastic ring to tighten the plastic ring.

As the forceps or the clip simultaneously clamps the plastic loop and the wound tissue, all the forceps and the clip are folded together when the loop is tightened, and a 50mm large wound can be sutured. However, the method is complex in operation and long in operation time, and the head of the forceps or the clip can turn over when the ring is tightened, so that the head of the forceps or the clip is trapped in the wound surface and is not beneficial to natural falling off after the operation. Often, an endoscopist can very painstakingly and carefully operate the action of tightening the ring, and if the ring is opened again and the head of the clamp or forceps is straightened by other instruments when the ring is turned over, the ring is tightened again, so that the operation time is prolonged again, and the success rate is further reduced.

SUMMERY OF THE UTILITY MODEL

The application provides a medical multijaw pincers to the not enough to prior art of solution, solve directly carry out the suture art of big surface of a wound with the pliers, the problem that operation time is long, the success rate is low and apparatus use quantity is many.

The application provides a medical multijaw pincers, includes: the pliers comprise at least two pliers arms which can be opened and closed respectively, the pliers arms are provided with locking sliding grooves, and the sliding grooves are provided with convex parts for locking;

the connecting pipe comprises a far end side, a middle part and a near end side, wherein the far end side is provided with a fixed rigid forceps arm, the near end side is provided with a convex-concave part or a hole part which can be separately connected, and the middle part of the connecting pipe is provided with a constraint part locked with the forceps arm;

the pull cable comprises at least two pull cables and is used for respectively controlling the opening and the closing of the single forceps arm, and the end part of the pull cable is provided with a joint part which can be detachably connected with the near end of the forceps arm;

the buckle is detachably connected with the connecting pipe, a plurality of laterally extending bulges are arranged on the buckle, and the bulges are combined with the connecting pipe and can be separated from the connecting pipe under the tension action of the inhaul cable;

the spring tube surrounds the cylindrical tube sheath of the inhaul cable, and the end part of the spring tube is also provided with a concave-convex part through which the spring tube can be detachably connected with the connecting tube;

the handle is connected to the inhaul cable and used for exerting acting force on the inhaul cable, and the handle is provided with at least two sliding blocks which are used for respectively controlling the inhaul cable, moving and releasing the pliers component.

Optionally, the sliding groove on the forceps arm is a multi-section sliding groove to realize opening, closing and pre-closing of the forceps arm;

the proximal end of the forceps arm is provided with a connecting piece connected with the inhaul cable, the connecting piece is a hole or a shaft, and the connecting piece can transmit opening and closing connecting force and is separated from the inhaul cable under the action of certain pulling force of the inhaul cable.

Optionally, an inward protrusion is arranged on the distal end side of the connecting pipe, and the protrusion can be matched with the forceps arm hole to open and close the forceps arm; the constraint part of the connecting pipe can be matched with the near end of the forceps arm to realize the locking of the forceps arm; the proximal end of the connecting tube has a convex-concave portion or a hole portion, which can be detachably connected with the buckle.

Optionally, the buckle has a plurality of protrusions arranged in the circumferential direction, the protrusions are combined with the connecting pipe and the spring pipe, and any part of the buckle is combined with the inhaul cable at the same time, so that the buckle deforms and is separated from the connecting pipe and the spring pipe under the tension action of the inhaul cable.

Optionally, the joint area between the buckle and the connecting pipe and between the buckle and the spring pipe is in clearance fit, so as to ensure that the connecting pipe and the spring pipe are smoothly separated after the buckle is separated.

Optionally, the end surface of the spring tube is provided with a convex-concave part or a hole part connected with the buckle; the head of the spring tube is provided with a step part capable of rotating 360 degrees, and the matching position of the buckle and the step part is in clearance fit, so that the spring tube and the buckle can rotate flexibly relatively.

Optionally, the cable has a distal end protrusion, and the distal end protrusion can be detachably connected to the forceps arm, and under the action of a preset pulling force, the cable deforms or breaks, and is separated from the forceps arm.

According to the technical scheme, the medical multi-claw forceps are used for hemostasis and tissue suture under the guidance of an endoscope of a digestive tract, the multi-claw forceps comprise a plurality of forceps arms which can be opened and closed relatively respectively to achieve tissue traction of a large wound surface, and the medical multi-claw forceps can be applied to the larger wound surface compared with a traditional forceps or a traditional clamp with a fixed opening size.

Drawings

In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of a medical multi-jaw forceps according to the present application;

FIG. 2 is a schematic view of the forceps arm of the present application;

FIG. 3 is a schematic view of a connection tube structure according to the present application;

FIG. 4 is a schematic structural view of the clip of the present application;

FIG. 5 is a schematic structural view of a cable of the present application;

FIG. 6 is a schematic view of the closed and unlocked status of the jawarms of the present application;

FIG. 7 is a schematic view of the structure of the sliding slot and the protrusion in the closed and locked state of the forceps arm according to the present application;

FIG. 8 is a schematic view of the construction of the present application showing the release of the cable from the other components in the closed and locked condition of the jawarms;

FIG. 9 is a schematic view of an upper and lower dual-layer assembly of the elastic forceps arm of the present application;

fig. 10 is a schematic structural view of the present application showing the staggered arrangement of the elastic forceps arms.

Detailed Description

Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application. But merely as exemplifications of systems and methods consistent with certain aspects of the application, as recited in the claims.

In order to solve the technical problems, the application discloses medical multi-jaw forceps, which can be used for respectively closing the control of forceps arms to clamp tissue on one side of a large wound surface with the diameter of 50mm, then clamp tissue on the other side of the large wound surface by moving an endoscope to reach the opposite side of the large wound surface, reduce the wound surface of a wound surface with the diameter of 50mm by two points with the maximum diameter, reduce the wound surface of the wound surface in a relatively larger area by the same method, and finally realize the suture of the small wound surface by using conventional forceps or clips.

As shown in figure 1, the medical multi-jaw forceps comprise a forceps arm 1, a connecting pipe 2, a buckle 3, a spring pipe 4, a pull rope 5 and a handle 6, so that the pull rope 5 can be driven to open and close the forceps arm 1 and lock the forceps arm 1 by applying axial pushing force and pulling force on the handle 6, and the forceps arm 1 and the connecting pipe 2 can be separated from the spring pipe 4 very easily to retain a human body so as to achieve the functions of hemostasis and tissue suture.

Specifically, as shown in fig. 2, the forceps arm 1 has a multi-stage sliding slot to realize opening and closing and pre-closing of the forceps arm 1. The proximal end of the forceps arm 1 has a hole or shaft connected to the pull cable 5, which allows the forceps arm 1 to be separated from the pull cable 5 under a certain tension of the pull cable 5, but has a connection force required for normal opening and closing.

As shown in fig. 3, the connecting tube 2 has a distal inward protrusion, which can be engaged with the hole of the forceps arm 1 to open and close the forceps arm 1; wherein the end has a restraining portion which can cooperate with the proximal end of the forceps arm to effect locking of the forceps arm 1. The proximal end of which has a male recess or hole portion that is detachably engageable with the catch 3.

As shown in fig. 4, the buckle 3 has a plurality of protrusions in a circumferential direction, the protrusions can be combined with the connecting pipe 2 and the spring pipe 4, any part of the protrusions can be combined with the cable 5 at the same time, and the buckle 3 deforms under the tension of the cable 5 so as to be separated from the connecting pipe 2 and the spring pipe 4, so that the connecting pipe 2 and the spring pipe 4 can be effectively separated.

Furthermore, the joint of the buckle 3, the connecting pipe 2 and the spring pipe 4 is in clearance fit, so that the connecting pipe 2 and the spring pipe 4 can be smoothly separated after the buckle 3 is separated. The spring tube 4 has end-face recesses or holes which are connected to the claws of the catch 3.

The head of the spring tube 4 is provided with a step part which can rotate relative to 360 degrees, and the fit is clearance fit so as to ensure that the spring tube can rotate flexibly relative to the head.

As shown in fig. 5, the pulling cable 5 has a distal end protrusion, which can be detachably connected to the forceps arm 1 in any shape, and the pulling cable 5 is deformed or broken under a certain pulling force to separate from the tail of the forceps arm 1.

In practical application, as shown in fig. 1, when the handle 6 applies axial pushing force and pulling force, the pulling cable 5 can be driven to open and close the forceps arm 1, lock the forceps arm 1, and separate the forceps arm 1 and the connecting tube 2 from the holder assembly.

The handle 6 is provided with two control parts which can respectively control the inhaul cable 5 to drive any one arm of the forceps arms 1 to rotate relative to the fixed forceps arms fixed on the connecting pipe 2 so as to realize that the unilateral tissue of the large wound surface can be clamped by unilateral closure, at the moment, the endoscope is moved to the other side to repeatedly operate the method to close the forceps arm at the other side so as to clamp the tissue at the other side, and finally, the tissues at the two sides of the large wound surface are folded together.

The pliers arm 1 has multistage spout and is not in the locking state when initial point 1.1 position, can repeat the switching wantonly, only need exert oneself again when the operator confirms that the operation is errorless when needing to separate the pliers and detain the human body, pliers arm 1 cooperates with bulge 2.1 of connecting pipe 2, owing to be the transition fit of mechanical design mesopore and axle, force initial point 1.1 and the bulge between locking point 1.2 to warp in order to let bulge 2.1 (or the round pin axle) in the connecting pipe 2 cross narrow bulge and reach the locking point.

In this embodiment, as shown in fig. 1 and 2, when the locking point 1.2 is not reached, the opening and closing and pre-closing of the forceps arm 1 can be realized; the proximal end of the forceps arm 1 is provided with a hole 1.4 or a shaft 1.3 connected with the inhaul cable 5, and the hole 1.4 or the shaft 1.3 can enable the forceps arm 1 to be separated from the inhaul cable 5 under the action of certain tension of the inhaul cable 5, but has the connection force required by normal opening and closing.

As shown in fig. 3, the connection tube 2 has a distal inward protrusion 2.1, which is engaged with the hole of the forceps arm 1 to open and close the forceps arm 1. The middle end of the connecting pipe 2 is provided with an avoiding part 2.4 and a locking part 2.2. As shown in fig. 6, 7 and 8, when the shaft 1.3 is combined with the locking part 2.2, the locking of the forceps arm 1 can be realized; the proximal end of which has a male recess or hole 2.3 which is detachably engageable with a male portion 3.1 of the catch 3.

As shown in fig. 4, the buckle 3 has a plurality of protrusions 3.1 in the circumferential direction, the protrusions 3.1 can be combined with the connection pipe hole portion 2.3 and the spring pipe hole portion, any portion of the buckle 3 is combined with the cable 5 at the same time, and the buckle 3 is deformed under the tension of the cable 5 so as to separate from the connection pipe 2 and the spring pipe 4, so as to effectively separate the connection pipe 2 and the spring pipe 4. The buckle 3 can also be a V-shaped steel wire with claws wound on the stay cable or connected with the stay cable in any mode.

The spring tube 4 has end-face recesses or holes which are connected to the claws of the catch. The inhaul cable 5 is provided with a far-end protruding part 5.2, the far-end protruding part can be in any shape 5.1 and can be detachably connected with the forceps arm 1, the inhaul cable 5 is deformed or broken under the action of certain pulling force to be separated from the tail part of the forceps arm 1, and particularly, the inhaul cable 5 can be broken and separated at any position with a self-tapered weak point under certain force.

In another specific embodiment of the present application, as shown in fig. 9, the forceps arms may be formed by elastic deformation, and may be distributed up and down, the pulling cable 5 may control the two forceps arms to open and close respectively, and the pulling cable 5 may naturally open by elastic deformation as in the above principle to achieve repeatable opening and closing, and when it is determined that the pulling cable 5 needs to be released, the pulling cable and the forceps arms may be disconnected in any way to retain the human body.

In another specific embodiment of the present application, as shown in fig. 10, the forceps arms may be formed by elastic deformation, and may be distributed in a left-right direction, the pulling cable 5 may control the two forceps arms to open and close respectively, and the pulling cable 5 may naturally open by elastic deformation to achieve repeatable opening and closing as the following principle, and when it is determined that the pulling cable 5 needs to be released, the forceps arms may be disconnected in any way to retain the human body.

The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.

Claims

1. A medical multi-jaw forceps, comprising:

the pliers comprise at least two pliers arms which can be opened and closed respectively, the pliers arms are provided with locking sliding grooves, and the sliding grooves are provided with convex parts for locking;

2. The medical multi-jaw forceps of claim 1, wherein the slide grooves on the forceps arms are multi-segment slide grooves to realize opening, closing and pre-closing of the forceps arms;

3. The medical multi-jaw forceps of claim 1, wherein the distal end of the connecting tube is provided with an inward protrusion, and the protrusion is capable of being engaged with the forceps arm hole to open and close the forceps arms; the constraint part of the connecting pipe can be matched with the near end of the forceps arm to realize the locking of the forceps arm; the proximal end of the connecting tube has a convex-concave portion or a hole portion, which can be detachably connected with the buckle.

4. The medical multi-jaw forceps of claim 1, wherein the buckle has a plurality of protrusions arranged in a circumferential direction, the protrusions are combined with the connecting tube and the spring tube, and any portion of the buckle is combined with the cable at the same time, so that the buckle is deformed to be separated from the connecting tube and the spring tube under the tension of the cable.

5. The medical multi-jaw forceps of claim 1, wherein the joint area between the buckle and the connecting tube and the spring tube is a clearance fit to ensure that the connecting tube and the spring tube are smoothly separated after the buckle is separated.

6. The medical multi-jaw forceps of claim 1, wherein the spring tube end surface is provided with convex-concave portions or hole portions connected with the snap; the head of the spring tube is provided with a step part capable of rotating 360 degrees, and the matching position of the buckle and the step part is in clearance fit, so that the spring tube and the buckle can rotate flexibly relatively.

7. The medical multi-jawed forceps of claim 1, wherein the pull cable has a distal protrusion that is detachably connectable to the forceps arms, and wherein the pull cable is deformed or broken to separate from the forceps arms when subjected to a predetermined pulling force.