CN110840522A - Stone-taking basket with threaded guide head - Google Patents
Stone-taking basket with threaded guide head Download PDFInfo
- Publication number
- CN110840522A CN110840522A CN201911266508.5A CN201911266508A CN110840522A CN 110840522 A CN110840522 A CN 110840522A CN 201911266508 A CN201911266508 A CN 201911266508A CN 110840522 A CN110840522 A CN 110840522A
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- CN
- China
- Prior art keywords
- guide head
- basket
- guide
- guide rod
- handle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus 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
Abstract
The invention discloses a calculus removing basket with a threaded guide head, which relates to the field of medical appliances and comprises a handle, an outer pipe fixed at the front end of the handle and an inner pipe arranged in the outer pipe, wherein a guide rod is arranged in the inner pipe, the front end of the guide rod is connected with the basket, and a driving piece for driving the guide rod to rotate is arranged on the handle; the front end of the basket is provided with a guide head, and the outer wall of the guide head is provided with threads; the handle is provided with a sliding switch connected to the rear end of the inner tube. According to the invention, the thread is arranged on the outer wall of the guide head at the front end of the basket, the guide rod is driven to rotate by the driving piece, the guide rod drives the guide head to rotate and penetrate through the calculus, and the thread on the outer wall of the guide head enables the guide head to easily penetrate through the calculus during rotation and enables the calculus to be broken, so that the basket can conveniently sleeve and take the calculus.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a stone-taking basket with a threaded guide head.
Background
Calculus refers to a solid block formed in a duct cavity or a cavity organ of a human body, such as a kidney, a ureter, a gallbladder or a bladder, and symptoms such as hematuria and biliary colic of a patient are often caused by calculus. The diagnosis and treatment technology for the calculus is mature at present, operation treatment is needed to be carried out when necessary in order to avoid pain, and the operation which is commonly used at present is also known as calculus removing basket calculus removing operation which is a safe and reliable minimally invasive treatment method.
In the prior art, the basket is usually formed by a plurality of guide wires which are distributed at equal intervals in the circumferential direction, the basket is moved to the position of the calculus during operation, the calculus is sleeved in the basket by utilizing the gap between the adjacent guide wires on the basket, and then the calculus is taken out. Of course, different methods of stone retrieval also differ; for example, when a large-sized and fragile stone is encountered, the stone needs to be broken and then taken out, and the stone is generally inserted through a guide head at the front end of the basket, so that the stone is broken. However, the stone-taking net basket in the prior art has the following defects: when stones with larger particle sizes and more fragile textures are crushed, the stones are not easy to penetrate and be crushed by a direct inserting mode of the common guide head, but the stones are easy to push, and the stones with larger particle sizes can scratch the inner walls of bile ducts and the like of patients when being pushed.
Disclosure of Invention
The invention aims to provide a calculus removing basket with a threaded guide head, and aims to solve the problem that in the prior art, when calculus with larger particle size and more fragile texture is crushed and taken out, the guide head of the basket is not easy to crush the calculus.
The invention provides a stone-taking basket with a threaded guide head, which comprises a handle, an outer pipe fixed at the front end of the handle and an inner pipe arranged in the outer pipe, wherein a guide rod is arranged in the inner pipe, the front end of the guide rod is connected with the basket, and a driving piece for driving the guide rod to rotate is arranged on the handle; the front end of the basket is provided with a guide head, and the outer wall of the guide head is provided with threads; the handle is provided with a sliding switch connected to the rear end of the inner tube.
Furthermore, the seeker is cylindrical, and the front end face of the seeker is a smooth curved surface.
Further, the screw pitch of the guide head is 10% -20% of the outer diameter of the guide head.
Further, the outer diameter of the seeker is 1.1-1.3 times the inner diameter.
Furthermore, the thread crest of the seeker is a curved surface.
Furthermore, a threaded sleeve is arranged in the handle, and the guide rod is in threaded connection with the inner wall of the threaded sleeve.
Furthermore, the driving member comprises a gear transmission set, and the gear transmission set is connected to the rear end of the guide rod.
Further, the gear transmission set comprises a first bevel gear and a second bevel gear meshed with the first bevel gear, and the second bevel gear is in threaded connection with the guide rod.
Furthermore, a rotary switch is arranged on the handle and connected to the first bevel gear.
The embodiment of the invention discloses a stone-taking basket with a threaded guide head, which comprises a handle, an outer pipe fixed at the front end of the handle and an inner pipe arranged in the outer pipe, wherein a guide rod is arranged in the inner pipe, the front end of the guide rod is connected with the basket, and a driving piece for driving the guide rod to rotate is arranged on the handle; the front end of the basket is provided with a guide head, and the outer wall of the guide head is provided with threads. According to the embodiment of the invention, the outer wall of the guide head at the front end of the basket is provided with the threads, the guide rod is driven to rotate by the driving piece, the guide rod drives the guide head to rotate and penetrate through the calculus, and the threads on the outer wall of the guide head enable the guide head to penetrate through the calculus more easily during rotation and enable the calculus to be broken, so that the basket can conveniently take the calculus.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic cross-sectional view of a stone-taking basket according to an embodiment of the present invention when folded;
FIG. 2 is a schematic cross-sectional view of an opened stone basket according to an embodiment of the present invention;
fig. 3 is a partially enlarged structural diagram of a in fig. 2.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
For convenience of explanation, the description of the present invention will be described using "front end" and "back end" when describing the location of technical features, and the description is made with reference to an operator, the front end refers to the end away from the operator when using the product of the present invention, and the back end refers to the end close to the operator.
Referring to fig. 1, 2 and 3, an embodiment of the invention provides a stone-taking basket with a threaded guide head, which includes a handle 1, an outer tube 2 fixed at the front end of the handle 1, and an inner tube 3 arranged in the outer tube 2, wherein a guide rod 4 is arranged in the inner tube 3, the front end of the guide rod 4 is connected with a basket 5, and a driving member for driving the guide rod 4 to rotate is arranged on the handle 1; the front end of the basket 5 is provided with a guide head 6, and the outer wall of the guide head 6 is provided with threads 61; the handle 1 is provided with a slide switch 12 connected to the rear end of the inner tube 3.
When the calculus is required to be taken, the guide head 6 is moved to the calculus position, the guide rod 4 is driven to rotate by the driving piece, the guide head 6 is further driven to rotate towards the calculus, in the rotating process of the guide head 6, the guide head 6 can penetrate through the calculus more easily through the threads 61, so that the calculus is broken, the sliding switch 12 which is arranged on the handle 1 and connected to the rear end of the inner tube 3 is slid, the inner tube 3 is driven to slide backwards, the basket 5 is opened, and therefore the broken calculus is sleeved with the basket 5 and taken out.
In one embodiment, the guiding head 6 is cylindrical, and the front end surface of the guiding head 6 is a smooth curved surface. In the process that the calculus removing basket enters the inner walls of a bile duct and the like of a patient to reach the calculus position, the guide head 6 is located at the foremost end of the whole calculus removing basket, and in order to prevent the guide head 6 from scratching the inner walls of the bile duct and the like, the front end face of the guide head 6 is set to be a smooth curved surface, so that friction between the guide head 6 and the inner walls of the bile duct and the like is reduced, and scratching is prevented.
In one embodiment, the pitch of the guide head 6 is 10% -20% of the outer diameter of the guide head 6, and is specifically set according to the size and texture of the calculus. For example, the calculus is soft and brittle, and can penetrate through the calculus without excessive rotation of the guide head 6, the ratio of the screw pitch of the guide head 6 to the outer diameter of the guide head 6 can be selected to be 20%, conversely, if the calculus is not easy to penetrate through the calculus, the ratio of the screw pitch of the guide head 6 to the outer diameter of the guide head 6 can be selected to be 10%, and the guide head 6 with a proper screw pitch is selected under different conditions, so that the calculus can penetrate through the calculus conveniently. In another embodiment, the outside diameter of the guide head 6 is 1.1-1.3 times the inside diameter, in which range the efficiency of the guide head through stones may be increased.
In one embodiment, the crest of the thread 61 of the seeker 6 is curved. The crest of the thread 61 of the guide head 6 is the most protruded position of the thread 61 and is also the outer diameter surface of the guide head 6, and the crest of the thread 61 of the guide head 6 can contact the inner walls of a bile duct and the like of a patient in the process of removing stones, so that the crest of the thread 61 of the guide head 6 is a curved surface, and the inner walls of the bile duct and the like are prevented from being scratched.
In one embodiment, a threaded sleeve 7 is arranged in the handle 1, and the guide rod 4 is screwed on the inner wall of the threaded sleeve 7. The guide rod 4 can drive the guide head 6 to move synchronously, so that the rotation of the guide rod 4 is particularly important, in the embodiment, the threaded sleeve 7 is arranged, the driving piece drives the guide rod 4 to rotate in the threaded sleeve 7, the stability of the rotation of the guide rod 4 can be ensured, the guide rod 4 also moves back and forth while rotating, so that the guide head 6 rotates in the axial direction and moves back and forth in the radial direction, and the guide head 6 can conveniently penetrate through stones.
In one embodiment, the driving member comprises a gear train 8, and the gear train 8 is connected to the rear end of the guide rod 4. Because the guide rod 4 can be linked with the guide head 6 to move synchronously in a rotating and sliding manner, the guide rod 4 can be ensured to rotate stably, and the guide rod 4 is driven to rotate by the gear transmission group 8 in the embodiment, so that the guide rod 4 is ensured to rotate stably. It is obvious that other ways of achieving rotation of the guide rod 4 are possible, such as by providing a rotatable member fixedly connected to the guide rod 4 in the axial direction or by providing a linkage structure engaging with the outer wall of the guide rod 4.
Preferably, in an embodiment, the gear transmission set 8 includes a first bevel gear 81 and a second bevel gear 82 engaged therewith, and the second bevel gear 82 is threadedly connected with the guide rod 4. Specifically, the guide rod 4 is in threaded connection with the threaded sleeve 7 and the second bevel gear 82, when the first bevel gear 81 rotates, the second bevel gear 82 is linked to rotate, and due to the threaded connection relationship between the guide rod 4 and the threaded sleeve 7, the guide rod 4 rotates and moves back and forth, so that the guide head 6 is linked to rotate and move back and forth, and the stone can be conveniently passed through.
In this embodiment, the second bevel gear 82 is provided with a hollow sleeve 821 at the front end, and the hollow sleeve 821 is rotatably connected to the rear end of the threaded sleeve 7, so as to ensure the stability of the second bevel gear 82 during rotation.
More preferably, in an embodiment, the handle 1 is provided with a rotary switch 11, and the rotary switch 11 is connected to the first bevel gear 81. In this embodiment, the rotary switch 11 is disposed on one side of the handle 1, and an operator only needs to rotate the rotary switch 11 to drive the first bevel gear 81 to rotate in conjunction with the second bevel gear 82, and further to drive the guide rod 4 to rotate and move back and forth, so as to control the seeker 6 conveniently and simply, and facilitate the operator to perform a stone extraction operation.
While the invention has been described with reference to specific embodiments, the invention is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The stone-taking basket with the threaded guide head is characterized by comprising a handle, an outer pipe fixed at the front end of the handle and an inner pipe arranged in the outer pipe, wherein a guide rod is arranged in the inner pipe, the basket is connected with the front end of the guide rod, and a driving piece for driving the guide rod to rotate is arranged on the handle; the front end of the basket is provided with a guide head, and the outer wall of the guide head is provided with threads; the handle is provided with a sliding switch connected to the rear end of the inner tube.
2. The stone extraction basket with the threaded guide head as claimed in claim 1, wherein the guide head is cylindrical and the front end surface of the guide head is smooth and curved.
3. The stone extraction basket with threaded guide head of claim 1 wherein the pitch of the guide head is 10% -20% of the guide head outer diameter.
4. The calculus removing basket assembly of claim 1 wherein the guide head has an outer diameter that is 1.1-1.3 times the inner diameter.
5. The stone extraction basket as recited in claim 1, wherein the thread crest of said guide head is curved.
6. The stone extraction basket with the threaded guide head as claimed in claim 1, wherein a threaded sleeve is provided in the handle, and the guide rod is threadedly coupled to an inner wall of the threaded sleeve.
7. The stone extraction basket as recited in claim 6, wherein said drive member comprises a gear train, said gear train being attached to a rear end of said guide rod.
8. The stone extraction basket with threaded guide of claim 7, wherein the gear train comprises a first bevel gear and a second bevel gear engaged therewith, the second bevel gear being threaded to the guide rod.
9. The stone extraction basket with the threaded seeker of claim 8, wherein the handle is provided with a rotary switch that is connected to the first bevel gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266508.5A CN110840522A (en) | 2019-12-11 | 2019-12-11 | Stone-taking basket with threaded guide head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911266508.5A CN110840522A (en) | 2019-12-11 | 2019-12-11 | Stone-taking basket with threaded guide head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110840522A true CN110840522A (en) | 2020-02-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911266508.5A Pending CN110840522A (en) | 2019-12-11 | 2019-12-11 | Stone-taking basket with threaded guide head |
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| Country | Link |
|---|---|
| CN (1) | CN110840522A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568499A (en) * | 2020-05-21 | 2020-08-25 | 范宁 | Bile duct calculus drilling device |
-
2019
- 2019-12-11 CN CN201911266508.5A patent/CN110840522A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111568499A (en) * | 2020-05-21 | 2020-08-25 | 范宁 | Bile duct calculus drilling device |
| CN111568499B (en) * | 2020-05-21 | 2024-03-01 | 范宁 | Bile duct stone-binding drilling device |
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