CN119074136B - Foreign matter taking-out device - Google Patents
Foreign matter taking-out deviceInfo
- Publication number
- CN119074136B CN119074136B CN202411358697.XA CN202411358697A CN119074136B CN 119074136 B CN119074136 B CN 119074136B CN 202411358697 A CN202411358697 A CN 202411358697A CN 119074136 B CN119074136 B CN 119074136B
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- foreign matter
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- taking
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/50—Instruments, other than pincettes or toothpicks, for removing foreign bodies from the human body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
- A61B2017/22034—Gripping instruments, e.g. forceps, for removing or smashing calculi for gripping the obstruction or the tissue part from inside
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/22031—Gripping instruments, e.g. forceps, for removing or smashing calculi
- A61B2017/22035—Gripping instruments, e.g. forceps, for removing or smashing calculi for retrieving or repositioning foreign objects
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/22—Implements for squeezing-off ulcers or the like on inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; for invasive removal or destruction of calculus using mechanical vibrations; for removing obstructions in blood vessels, not otherwise provided for
- A61B17/221—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions
- A61B2017/2217—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions single wire changing shape to a gripping configuration
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Vascular Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The embodiment of the application provides a foreign matter taking-out device, which relates to the field of medical equipment and comprises a foreign matter taking-out part, an adjusting part and an operating part, wherein one end of the foreign matter taking-out part is braided into a convergent part, the operating part is fixedly connected to the tail end of the convergent part, the adjusting part is arranged on the outer side of the convergent part in a surrounding mode, and one end of the adjusting part is fixedly connected with the operating part. The whole diameter of the foreign matter taking device is extremely fine, which is reduced by more than 50% compared with the whole diameter of the traditional stone taking basket product, and the foreign matter taking device can be directly sent into finer cavities. Can easily reach the positions of biliary tract, intestinal tract, etc., can ensure the effective rotation of the foreign body taking-out part under various curves, and greatly expands the application range of the stone-taking foreign body treatment.
Description
Technical Field
The invention relates to the field of medical instruments, in particular to a foreign body taking-out device.
Background
The prior foreign body taking-out device is mainly a stone taking basket, a net bag, a foreign body clamp and the like. In operations such as sub-mirror rubble, there is the condition that the diameter is less in the apparatus passageway of sub-mirror, when cooperating traditional foreign matter extraction device to use, because of the sheath pipe diameter is great, often need draw back other apparatuses back again import foreign matter extraction device, on the one hand influences the accuracy of foreign matter extraction device secondary entering position like this, on the other hand in the occasion that needs many apparatuses to operate cooperatively, the great diameter of foreign matter extraction device can occupy other apparatus operation space, leads to unable and other apparatuses collaborative operation.
The device is particularly applied to the removal of foreign matters in the pancreas and biliary tract, because the pancreas and biliary tract is narrow and has a plurality of tiny branches, the foreign matters removal device needs to have a longer length and good bending performance when entering through the duodenal papilla, but the current basket can only achieve the effects of being easy to bend, poor in pushing performance or good in pushing performance but not easy to bend, and the current foreign matters removal device cannot achieve long-distance operation under the small diameter because the diameter and performance of the basket cannot meet the requirements.
In view of this, the present application has been made.
Disclosure of Invention
The invention aims to provide a foreign matter taking-out device which has the characteristics of small diameter, long length, flexibility and good pushing property and is beneficial to realizing the operation in a small cavity channel under a longer span.
Embodiments of the invention may be implemented as follows:
in a first aspect, the present invention provides a foreign matter extraction device including a foreign matter extraction portion, an adjustment portion, and an operation portion;
One end of the foreign matter taking-out part is formed by longitudinally staggering at least two wires to form a converging part, and the operating part is fixedly combined at the tail end of the converging part;
The adjusting part is configured to adjust the softness of the converging part, the adjusting part is arranged on the outer side of the converging part in a surrounding way, one end of the adjusting part is fixedly connected with the operating part, and the adjusting part comprises an inner channel extending longitudinally and penetrating through;
A movable gap is arranged between one end of the adjusting part, which is far away from the operating part, and the converging part, and the movable gap is structured to enable one end of the adjusting part, which is far away from the operating part, and the foreign matter taking-out part to generate relative position change and relative rotation;
The position relationship among one end of the foreign matter taking-out part, one end of the adjusting part and the operating part is relatively fixed.
In an alternative embodiment, the adjusting part is tubular, and a groove for facilitating bending of the adjusting part is arranged on the adjusting part along the circumferential direction.
In an alternative embodiment, the adjustment portion is a spring tube.
In an alternative embodiment, the outer diameters of the adjustment portion and the operation portion are substantially the same.
In an alternative embodiment, the constriction is braided from several wires.
In an alternative embodiment, the adjusting portion is further provided with a developing section, and the developing section is disposed at an end of the adjusting portion away from the operating portion.
In an alternative embodiment, the developing section is fixedly connected with the adjusting part or integrally formed with the adjusting part, or the developing section is obtained after a developing coating is arranged on the adjusting part.
In an alternative embodiment, an end of the developing Duan Yuan away from the operation portion is provided with a rounded end.
In an alternative embodiment, the end of the operating part remote from the adjusting part is provided with a marking zone.
In an alternative embodiment, the end of the operating part remote from the adjusting part is provided with a rounded end.
In an alternative embodiment, a connecting pipe is sleeved and fixed at the connection part of the operation part and the converging part, and one end of the adjusting part is sleeved on the connecting pipe and fixed with the connecting pipe.
In an alternative embodiment, the adjustment portion is less rigid than the operating portion.
The beneficial effects of the embodiment of the invention include, for example:
The foreign matter taking-out device has extremely fine overall diameter, does not need to be provided with an outer sheath tube required by a traditional basket, reduces the overall diameter by more than 50% compared with the traditional stone taking basket product, and can be directly fed into a finer cavity. Meanwhile, the adjusting part improves the axial rigidity and the radial support of the front end of the foreign body taking-out part, is better than the pushing property and the support of a basket woven by a single nickel-titanium alloy wire, can easily reach the positions of biliary tract, intestinal tract and the like, can ensure the effective rotation of the foreign body taking-out part under various curves, and greatly expands the application range of stone-taking foreign body treatment.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing a structure of a foreign matter extraction device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a foreign object removal apparatus according to another embodiment of the present invention;
FIG. 3 is a schematic view of a first basket;
FIG. 4 is a schematic view of a second basket;
FIG. 5 is a schematic view of a third basket;
fig. 6 is a schematic structural view of a first type of converging portion;
Fig. 7 is a schematic structural view of a second type of converging portion;
fig. 8 is a schematic structural view of an operation part;
FIG. 9 is a schematic view of a portion of the structure of FIG. 2;
FIG. 10 is a schematic view of a foreign object extraction device mated with a sub-mirror;
Fig. 11 is an enlarged view of a portion a of fig. 10;
Fig. 12 is a schematic structural view of the connection position of the adjusting portion and the operating portion.
The icons are 100-foreign matter extraction part, 110-object taking basket, 120-beam-collecting part, 200-adjusting part, 400-developing section, 500-operating part, 510-marking area, 520-smooth end part, 530-mandrel, 600-connecting pipe and 700-sub mirror.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus it should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, if any, are used merely for distinguishing between descriptions and not for indicating or implying a relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
Referring to fig. 1 and 2, the present embodiment provides a foreign matter extraction device including a foreign matter extraction portion 100, an adjustment portion 200, and an operation portion 500;
one end of the foreign matter extraction part 100 is formed by at least two wires which are longitudinally staggered to form a converging part 120, and the operation part 500 is fixedly combined at the tail end of the converging part 120;
The adjusting part 200 is configured to adjust the softness of the converging part 120, the adjusting part 200 is annularly arranged outside the converging part 120, one end of the adjusting part 200 is fixedly connected with the operating part 500, and the adjusting part 200 comprises an inner channel extending longitudinally and penetrating;
a movable gap is provided between the end of the adjusting portion 200 away from the operation portion 500 and the converging portion 120, and the movable gap is configured to enable a relative position change and a relative rotation between the end of the adjusting portion 200 away from the operation portion 500 and the foreign matter extraction portion 100;
The positional relationship among the one end of the foreign matter extraction unit 100, the one end of the adjustment unit 200, and the operation unit 500 is relatively fixed.
In some embodiments, the constriction 120 is braided from several filaments.
In some embodiments, the foreign object extraction portion 100 includes an extraction basket 110 formed by winding two or more wires, the ends of which are woven together to form a constriction 120.
The material of the basket 110 in the present application may be a memory alloy, so as to avoid loosening of the basket 110. The basket 110 is directly received by wire braiding, and is folded without auxiliary folding such as a riveting pipe, and the folding part 120 is formed by continuously extending braiding after folding, so that the softness of the foreign matter taking-out part 100 is increased, and more complicated curve bending is facilitated.
Referring to fig. 3 to 5, as one of the braiding methods, one wire of the foreign matter extraction unit 100 includes two parts, namely, a basket 110 at the head end and a converging unit 120 at the tail end, the basket 110 is formed in an elliptical, spiral or triangular shape as a whole, and the ends of two or more branched wires at the tail end are braided together to form the converging unit 120. Referring to fig. 6 and 7, as one of the braiding methods, the structure of the converging portion 120 may be configured such that the first and second branches extend in a spiral shape as a whole, and the first and second branches are intertwined with each other. As another knitting method, the structure of the converging portion 120 may be such that the first branch extends straight as a whole, the second branch extends helically as a whole, and the second branch is wound around the outer surface of the first branch.
In some embodiments, the length of the basket 110 along the axial direction of the converging portion 120 is greater than the length along the radial direction of the converging portion 120, which is advantageous for facilitating preferential axial collapsing of the foreign matter removal portion 100 when the foreign matter removal portion is pressed. In some embodiments, the length of the converging portion 120 is greater than 20% of the total length of the foreign object removal portion 100, which is advantageous for ensuring the softness of the foreign object removal portion 100 and for more complex curve bending entry.
In the present application, the foreign matter extraction unit 100 is used for collecting the foreign matters to be extracted, the operation unit 500 is used for an operator to control the foreign matter extraction device to move and rotate, and the converging unit 120 of the foreign matter extraction unit 100 is directly connected with the operation unit 500.
Specifically, referring to fig. 8, as an embodiment, the operation part 500 is divided into a mandrel 530 part and a winding cable part, the winding cable part is wound around the mandrel 530 part, and the winding cable part is fixedly connected with the mandrel 530 part, and the fixing connection manner includes, but is not limited to, welding, bonding or other manners capable of achieving relative fixing of the two. The end of the wrapped cable portion near the bundling portion 120 continues to extend after completely wrapping the mandrel 530 portion, and the extending portion is disposed around the outside of the bundling portion 120 and fixedly connected to the bundling portion 120 and the extending portion, and similarly, the manner of fixedly connecting includes, but is not limited to, welding, bonding, or other manners capable of achieving relative fixation of the two.
As another embodiment, the whole of the converging portion 120 and the operating portion 500 may be welded, glued or otherwise fixed relative to each other.
The adjusting part 200 is disposed around the outside of the converging part 120, and the adjusting part 200 can move forward and backward along with the foreign matter taking-out part 100 under the control of the operating part 500, and the foreign matter taking-out part 100 rotates along with the rotation of the operating part 500. The adjusting portion 200 may enhance the supporting ability of the converging portion 120 in the radial direction while enhancing the pushing ability to enhance the ability of the foreign matter taking-out portion 100 to pass through a complex channel. The materials of the respective parts of the foreign matter removal device of the present application may be selected from conventional materials in medical instruments, such as nickel-titanium alloy, memory alloy, and the like, unless otherwise specified.
The integral strength and rigidity of the existing sheath pipe network basket are consistent, and the invention is different from the existing sheath pipe network basket in that the adjusting part 200 and the converging part 120 are combined to form a front section part of the foreign matter taking-out device, the operating part 500 is a rear section part of the foreign matter taking-out device, the rigidity of the adjusting part 200 is smaller than that of the operating part 500, the front section part is smaller than that of the rear section part, and the front section part has the characteristics of better elasticity, softer property, convenience for excessively small bending and certain supporting force, and the rear section part has the characteristics of stronger rigidity, good supporting force, certain elasticity and good pushing property.
Furthermore, in the actual use process, as an instrument required for one of the operations, the foreign matter extraction device can be applied to the operations related to the pancreatic and biliary tract, and the current sheath stone extraction basket cannot be directly applied to the sub-mirror 700 in the operation process due to the defect of larger diameter, and the sub-mirror 700 needs to be extracted first and then inserted into a larger channel, so that the foreign matter extraction device of the invention can be directly inserted into the sub-mirror 700 of the pancreatic and biliary tract imaging catheter, as shown in fig. 10 and 11. Since the pancreatic biliary tract has a narrow structure and a plurality of small branches, there is a case that a small bend is required in the imaging catheter of the pancreatic biliary tract, the front section of the foreign matter extraction device is used for the small bend and plays a role of guiding, and the rear section of the foreign matter extraction device is used for maintaining the whole push property and the support property.
When the front section of the foreign matter taking-out device is too long, the whole pushing performance of the foreign matter taking-out device is affected due to the fact that the front section is softer, so that the push-pull opening and closing performance and the rotation performance of the foreign matter taking-out device are reduced, and when the front section exceeds a certain range, the pushing resistance is gradually increased along with the increase of the soft section, the rotation is delayed or delayed, and the whole performance of the foreign matter taking-out device is reduced. In order to meet the practical use condition, through practical tests, the length of the front section part of the foreign matter taking-out device is preferably 200-500mm, and in the length range, the whole pushing performance of the foreign matter taking-out device cannot be affected, so that the bending requirement of the corresponding position can be met while the rigidity and the pushing performance requirements of the foreign matter taking-out device are met.
The sheath pipe basket is widely used in the prior art, the diameter of the sheath pipe basket is large, the requirement of the small diameter cannot be met, however, after the sheath pipe with the sheath pipe basket is removed, the sheath pipe basket is directly applied and is flexible, the pushing performance is poor, so that a product without the sheath pipe basket cannot be obtained, if the whole strength of the whole basket is enhanced due to over softness, the problem that the whole basket cannot be excessively bent is solved, and the pushing performance is enhanced and the diameter is not increased by changing the structure on the basis of no small diameter of the sheath pipe. The whole diameter of the foreign matter taking device is extremely fine and can be as low as 0.8-1mm, which is reduced by more than 50% compared with the whole diameter of the traditional stone taking basket product, and the foreign matter taking device can be directly sent into finer cavities.
Compared with the conventional basket part with the sheath tube basket, the structure of the constriction part 120 and the adjusting part 200 of the invention ensures that the foreign matter taking-out part 100 is suspended relative to the external cavity, thereby being beneficial to ensuring the effective rotation of the foreign matter taking-out part 100 under various curves and expanding the application range of stone-taking foreign matter treatment. The problem that the conventional basket part with the sheath basket cannot be accurately operated in an endoscope channel under the condition of no sheath pipe is solved, and meanwhile, the adjusting part 200 has good axial rigidity and radial support, so that the foreign matter taking-out part 100 has better pushing property, and is beneficial to reaching the positions of biliary tract, intestinal tract and the like.
The structure of the converging part 120 of the foreign matter taking-out part 100 is different from the traditional mesh basket head which is in a rivet receiving converging mode, the converging part 120 is in a straight receiving converging lengthening mode by weaving, the functions of controlling the diameter size and increasing the flexibility of the far end are achieved, the converging part 120 is designed to enable the whole foreign matter taking-out part 100 to be more slim, friction with the wall of a cavity is effectively reduced, and the foreign matter taking-out part is softer, is easier to bend and smoothly enters a complex cavity.
The sectional splicing form and the synchronous cooperation with the operation part 500 of the invention increase the flexibility and the action transmissibility of the foreign body taking-out device and can be smoothly bent into a complex cavity.
The foreign matter taking-out device is applied to a pancreatic and biliary tract imaging catheter, two extreme overbending exists in the use process of the catheter, namely ① duodenum enters a nipple (about 90 degrees), ② pancreas and bile duct inner reverse mirror operation (about 180 degrees), the foreign matter taking-out device is divided into front and rear sections, the front end is good in elasticity and soft, is suitable for overbending, plays a guiding role, and the tail end is harder, and has a better pushing effect.
In some embodiments, the front end length may be 200-500mm, which may result in performance degradation if the front soft segment is too long, particularly if the push resistance increases gradually as the soft segment increases, and the rotation is delayed or delayed. Specifically, the anterior segment may be 30cm in length (accounting for 10+10+10=30 cm; the gallbladder is pear-shaped about 7-10cm long, the common bile duct is about 7-10cm long, a 10cm safety margin is reserved).
In some embodiments, the adjusting portion 200 is tubular, and a groove for facilitating bending of the adjusting portion is provided on the adjusting portion 200 along a circumferential direction, and preferably, the adjusting portion 200 is a spring tube.
The adjusting portion 200 can be bent in any radial direction, and is not easily compressed in the axial direction, so as to ensure the supporting capability of the converging portion 120 and enhance the pushing capability of the foreign matter removing portion 100.
The adjusting portion 200 may have a structure similar to a snake bone tube, so that the reinforcing tube can be bent while securing the strength of the reinforcing tube.
In some embodiments, a movable gap is provided between the end of the adjusting portion 200 remote from the operating portion 500 and the converging portion 120.
When the adjusting portion 200 is blocked and cannot rotate, a movable gap is provided between the distal end of the adjusting portion 200 (the end close to the operating portion 500 is the proximal end, and the end close to the one-zone extracting portion is the distal end) and the converging portion 120, so that the foreign matter extracting portion 100 can smoothly rotate under the control of the operating portion 500, and the phenomenon that the foreign matter extracting portion 100 cannot rotate when blocked can be reduced. In a specific operation, the foreign matter taking-out portion 100 is used in combination with an endoscope or a catheter, and by controlling the relative positions of the foreign matter taking-out portion 100 and the endoscope or the catheter, the foreign matter taking-out portion 100 is pulled or pushed, and the opening and tightening of the head of the foreign matter taking-out portion 100 are achieved by the extrusion of the channel wall of the endoscope or the catheter, so that the foreign matter is collected into the foreign matter taking-out portion 100 and is moved out of the body along with the endoscope or the catheter.
More specifically, in this embodiment, when the operation unit 500 is rotated, since the adjustment unit 200 uses a spring tube as a component, the torsion characteristic of the spring determines that there is a difference in the number of rotations at both ends thereof, and thus the other end can be rotated at a certain degree when one end is restrained. Since the remote end of the adjusting part 200 and the foreign body taking-out part 100 are not in contact constraint, the remote end rotation of the foreign body taking-out part 100 is directly controlled by the operating part 500, and the action of the adjusting part 200 is not affected, otherwise, the rotation of the foreign body taking-out part 100 is not affected when the movement of the adjusting part 200 is limited. Therefore, the movement state of the adjusting portion 200 does not affect the foreign matter taking-out portion 100 nor the rotation of the foreign matter taking-out portion 100.
In the actual use process, as the channels of the mother lens and the son lens 700 are relatively rough, the friction force between the instrument and the inner wall of the channel is large, so that softer products cannot rotate in the channel, the conventional stone removing products are coated by the outer sheath, and the lubricating means are arranged in the outer sheath, so that the products can rotate conveniently. The adjusting part 200 of the foreign matter taking-out device is far away from the movable gap between one end of the operating part 500 and the converging part 120, so that the adjusting part 200 cannot rotate under the influence of the inner wall of the channel, but does not influence the rotation of the foreign matter taking-out part 100, and further, the requirements of sufficient softness, pushing property and good operability of the foreign matter taking-out device are met.
In some embodiments, the outer diameters of the adjustment portion 200 and the operation portion 500 are substantially the same.
The proximal end of the adjusting part 200 is integrally connected with the operating part 500, and the overall diameter is substantially the same, as shown in fig. 12, so that the foreign body removing device in the body can be prevented from damaging the inner wall of the lumen due to the change of the diameter.
In some embodiments, the beam converging portion 120 further includes a developing section 400, and the developing section 400 is disposed at an end of the adjusting portion 200 remote from the operating portion 500.
The developing section 400 may be provided with a material having a developing action such as platinum iridium alloy, etc., so that the developing section 400 has a developing action in order to track the position of the foreign matter removal device in the body.
In some embodiments, the developing section 400 is fixedly connected or integrally formed with the regulating portion 200, or the developing section 400 is obtained after a developing coating is provided on the regulating portion 200.
In some embodiments, an end of the operating portion 500 remote from the adjusting portion 200 is provided with a marking region 510.
In some embodiments, the operation part 500 may be one wire or may be woven from a plurality of wires, for example, the wire may be obtained by winding a plurality of wires and welding the wire on the mandrel 530, so as to ensure the synchronism of the motion transmission. The end of the operation part 500 remote from the adjustment part 200 is provided with a marking area 510, which may mark colors or marks, to assist the doctor in determining the depth of the inside, as shown in fig. 9. The foreign body removing device of the present application can be directly controlled to move and rotate by the operating part 500 when in use, and no additional handle is required.
In some embodiments, the end of the operating portion 500 remote from the adjustment portion 200 is provided with a rounded end 520 to prevent scratching of the operator during use.
In some embodiments, a rounded end 520 is provided at an end of the developing section 400 remote from the operating part 500, so as to reduce damage to the chamber wall.
In some embodiments, a connection pipe 600 is sleeved and fixed at the connection point of the operation part 500 and the converging part 120, and one end of the adjusting part 200 is sleeved on the connection pipe 600 and fixed with the connection pipe 600.
In this embodiment, the operation portion 500 and the converging portion 120 are directly connected, and the connecting tube 600 is sleeved at the connection position of the two portions, which is beneficial to improving the connection strength. Any form that can realize connection, such as welding, riveting, cementing, etc., can be adopted between the connection pipe 600 and the operation portion 500, the converging portion 120, and the adjusting portion 200.
Experimental example 1:
The foreign matter extraction device shown in fig. 2 of the present application was inserted into the pancreatic biliary tract, wherein the total length of the foreign matter extraction device (the total length of the basket 110 and the developing section 400 is small, the total length of the foreign matter extraction device is about the total length of the spring tube and the operating section 500), one end of the spring tube was riveted with the operating section 500 through the connecting tube 600, the length L1 of the spring tube and the distance L2 from the rivet point to the position of the spring tube near the foreign matter extraction section 100 are shown in table 1, the lengths of L1 and L2 are shown in fig. 9, and the rotation condition of the foreign matter extraction device was studied, and the results are shown in table 1.
TABLE 1
Experimental example 2:
the difference from experimental example 1 was only that the end of the spring tube near the foreign matter removal portion 100 was also fixed to the spindle 530, and the rotation of the foreign matter removal device was examined, and the results are shown in table 2.
TABLE 2
When the foreign matter extraction device of the present application is bent, the foreign matter extraction unit 100 can be rotated synchronously by rotating the operation unit 500. When the device enters into the complex cavity of the human organ, a plurality of curves exist in the device for removing the stone foreign matter, and the foreign matter removing part 100 can still normally rotate. If one end of the spring tube near the foreign matter extraction unit 100 is fixed to the converging unit 120, synchronous rotation cannot be achieved.
The adjusting portion 200 of the present invention is a spring tube, and the torsion characteristics of which determine the difference in the number of revolutions at both ends thereof, so that when one end is restrained, the other end can be rotated by a certain amount. The inside of the sleeve passes through the converging part 120, the converging part 120 can better synchronously transmit rotation, the distal end of the adjusting part 200 and the converging part 120 are not in contact constraint, and the rotation of the converging part 120 is directly controlled by the operating part 500 and is irrelevant to the rotation of the adjusting part 200. But if both ends of the adjustment portion 200 are fixed to the spindle 530, the synchronous rotation of the spindle 530 may restrict the sleeve from rotating synchronously, in which case if the adjustment portion 200 is prevented from rotating, the movement of the converging portion 120 may be prevented. Since the adjusting portion 200 is fixed to the operation portion 500 and the other end is not fixed to the converging portion 120 but is only sleeved on the converging portion 120, the moving state of the adjusting portion 200 does not affect the converging portion 120 and thus the rotation of the foreign matter taking-out portion 100.
In a bending state, an object passing through the cavity can squeeze the cavity to generate friction force, and the harder the object is, the larger the extrusion force is, and the larger the friction resistance is. The converging portion 120 of the foreign matter removing portion 100 according to the present invention is different from a hard wire rope, and is softer and finer, and has less pressure on the pipe wall during bending, less resistance, and smoother motion transmission. When the adjusting portion 200 and the converging portion 120 are fixed at two ends, the converging portion 120 is rotated mainly by the adjusting portion 200, and the hardness of the spring tube is far higher than that of the braided wire, so that friction of the adjusting portion 200 to the wall of the cavity is increased, the adjusting portion 200 cannot rotate, and therefore the inner converging portion 120 cannot move independently.
In the straightened state, the converging portion 120 is suspended partially relative to the adjusting portion 200, and the end portion of the converging portion 120, which is close to the foreign matter taking-out portion 100, is not connected to the adjusting portion 200, and is in an equivalent non-resistance state, so that the rotation of the foreign matter taking-out portion 100 is independent of the movement state of the adjusting portion 200. When the adjusting portion 200 is fixed to both ends of the converging portion 120, the movement of the adjusting portion 200 is closely linked to the converging portion 120, and once the adjusting portion 200 cannot be rotated, the converging portion 120 is difficult to rotate.
The main function of the outer sheath is to establish a working channel so that the working part and the working channel can cooperate with each other to realize the product function, while the working channel of the sub-mirror 700 has the same function as the working channel established by the outer sheath, the protective structure of the application is that the outer sheath can not be arranged, the application only has the reinforcing part of the tubular part with the grooved structure, and the same purpose can be achieved by using the sub-mirror 700 channel after the outer sheath tube is removed, but the application needs to be matched with an endoscope and the like, and the product has more space to strengthen the strength of the photo after the sheath tube is discarded, so that the product has better pushing performance. The non-sheath basket and the sub-scope 700 basket work under the pancreatic and biliary tract imaging catheter (called sub-scope 700 for short), and the non-sheath basket and the sub-scope 700 basket all need to reach a designated position by means of a working channel of the sub-scope 700 to operate and remove stones and foreign matters. The main difference between the two is that the sheath-free pipe network basket is used as a sheath pipe channel by the sub-mirror 700 channel, the sub-mirror 700 channel is utilized to realize the opening and closing operation of the basket, and the existing sub-mirror 700 basket is provided with the sheath pipe, so that the opening and closing operation can be independently completed.
The basket with the outer sheath tube and the basket without the sheath tube are equivalent to the outer sheath tube assembled in vitro, and the outer sheath tube is assembled in the surgical process, so that repeated pushing or even incapability of pushing the basket in the surgical process can cause serious consequences, and the success rate of pushing the basket is higher. The sheath-free pipe basket in the application realizes opening, closing and rotating operation by means of the sub-mirror 700, the channel of the sub-mirror 700 can be understood as the outer sheath of the sheath-free pipe basket, the sub-mirror 700 is provided with the handle, and the outer sheath pipe can be understood to be fixed, so that the position of the outer sheath pipe of the basket can not be separated by any operation of the sub-mirror 700, and the success rate of pushing the basket is higher. However, the conventional basket is provided with a sheath tube, the handle is used for restraining the interactive operation between the working part and the outer sheath tube, and if the support of the handle is lost at this time, the outer sheath tube is uncontrollable and then cannot be operated after losing the restraint, so that the success rate of pushing the basket is reduced.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411358697.XA CN119074136B (en) | 2024-09-27 | 2024-09-27 | Foreign matter taking-out device |
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| CN202411358697.XA CN119074136B (en) | 2024-09-27 | 2024-09-27 | Foreign matter taking-out device |
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| CN119074136B true CN119074136B (en) | 2025-07-25 |
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| JP4112911B2 (en) * | 2002-06-19 | 2008-07-02 | テルモ株式会社 | Intravascular foreign matter removal wire and medical device |
| JP6312465B2 (en) * | 2014-03-04 | 2018-04-18 | 株式会社八光 | Tissue excision instrument for loop endoscope |
| CN203776986U (en) * | 2014-03-10 | 2014-08-20 | 安瑞医疗器械(杭州)有限公司 | a stomach stone breaker |
| JP2019518484A (en) * | 2016-04-14 | 2019-07-04 | ボストン サイエンティフィック サイムド，インコーポレイテッドＢｏｓｔｏｎ Ｓｃｉｅｎｔｉｆｉｃ Ｓｃｉｍｅｄ，Ｉｎｃ． | Medical system, device, and related method |
| CN206910370U (en) * | 2016-08-30 | 2018-01-23 | 上海复堂生物科技有限公司 | Basket-type foreign body forcepses |
| CN109805986A (en) * | 2019-03-21 | 2019-05-28 | 南京微创医学科技股份有限公司 | A kind of medical multijaw pincers |
| CN211796728U (en) * | 2019-10-12 | 2020-10-30 | 广东富江医学科技有限公司 | Basket assembly and stone-taking basket |
| CN211187365U (en) * | 2019-10-14 | 2020-08-07 | 高占成 | Biopsy sampling suction forceps |
| CN110742676A (en) * | 2019-10-31 | 2020-02-04 | 常州贺利氏微创医疗器械有限公司 | Integrated stone-removing mesh basket and its manufacturing process and stone-removing mesh basket apparatus |
| CN211243588U (en) * | 2019-11-20 | 2020-08-14 | 北京弘海科技发展有限公司 | A kind of stone taking net basket formed by laser cutting one piece |
| CN213850914U (en) * | 2020-11-13 | 2021-08-03 | 兰州大学第二医院 | A gastrolith lithotriptor |
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| CN211511953U (en) * | 2019-10-31 | 2020-09-18 | 常州贺利氏微创医疗器械有限公司 | Stone extraction basket components and stone extraction baskets |
| CN111938751A (en) * | 2020-09-14 | 2020-11-17 | 南微医学科技股份有限公司 | A kind of extracting device and medical equipment |
| CN218899603U (en) * | 2022-12-12 | 2023-04-25 | 广东富江医学科技有限公司 | Basket core wire and basket apparatus |
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