CN113100874A - Biliary tract calculus-taking basket convenient for taking calculus - Google Patents
Biliary tract calculus-taking basket convenient for taking calculus Download PDFInfo
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- CN113100874A CN113100874A CN202110388691.7A CN202110388691A CN113100874A CN 113100874 A CN113100874 A CN 113100874A CN 202110388691 A CN202110388691 A CN 202110388691A CN 113100874 A CN113100874 A CN 113100874A
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- basket
- calculus
- steel wire
- taking
- stone
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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
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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
- A61B2017/2212—Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions having a closed distal end, e.g. a loop
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- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
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Abstract
The invention discloses a biliary calculus-taking basket convenient for taking calculus, which comprises a handle (1), an outer sheath tube (2), a basket (3) and a traction steel wire (4); the far end of the basket (3) is provided with a guide head (7) deviating from the axial direction, the guide head (7) comprises a metal head (10) and a guide wire (11), the traction steel wire (4) is a flexible shaft core, an endoscope clamping channel (5) is used as a shaft core matched sleeve, and the flexible shaft core is arranged in the flexible shaft sleeve, so that the traction steel wire (4) can effectively transmit torque along different axial directions; furthermore, during the endoscopic stone extraction, the far-end guide head (7) and the basket (3) synchronously rotate around the axial direction of the stone extraction basket by adjusting the handle (1), and the relative positions of the guide head (7) and the basket (3) and a target stone are changed, so that the biliary stone extraction basket disclosed by the invention avoids carry obstacles, and the net-off rate of small stones can be reduced. The stone removing device is accurate in operation, convenient for stone removal, time-saving and suitable for popularization.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to a biliary calculus removing basket convenient for removing calculus.
Background
At present, the incidence rate of biliary calculus rises year by year, and millions of patients are newly increased every year. With the rapid development of endoscopes and their matching technologies, the operation of removing biliary calculus under endoscopes (duodenoscope and choledochoscope) is becoming mature day by day, and the treatment of biliary calculus by minimally invasive diagnosis and treatment technology is widely used.
In the process of removing the calculus, the calculus removing basket with the equal-diameter outer sheath tube is mainly used clinically. Because the existing calculus removing basket is fixed in the advancing and retreating directions in the biliary tract, when the advancing direction is blocked by obstacles such as calculus and the like, the direction can not be adjusted to bypass, and finally the calculus can not be captured. At present, the problem is solved mainly by a method of guiding by a guide wire or reinserting after the endoscope is pulled out and pulled out to adjust the direction, so that the operation time is increased, and even the operation is stopped because the bile duct is damaged by repeated pulling out and inserting. In addition, for smaller stones, in the process of manually tightening the basket and pulling back, the stones are easy to be separated from the gaps of basket alloy wires, and are required to be repeatedly sleeved and taken, so that time and labor are wasted. Aiming at the problems, the existing biliary calculus-taking net basket needs to be perfected.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides the biliary calculus removing basket convenient for removing the calculus, the relative positions of the distal guide head and the basket and the target calculus can be synchronously adjusted by rotating the handle, so that the calculus removing basket can not only avoid carry obstacles, but also reduce the net-off probability of smaller calculus, thereby improving the calculus removing success rate and saving the operation time.
One of the technical solutions adopted to solve the above technical problems of the present invention is:
a biliary tract calculus removing basket convenient for removing calculus comprises a handle 1, an outer sheath tube 2, a basket 3 and a traction steel wire 4.
Preferably, the basket 3 is provided with an off-axial guide head 7 at its distal end.
Preferably, the guide head 7 is composed of a guide wire 11 and a metal head 10 at the far end of the guide wire 11.
One of the technical solutions adopted to solve the above technical problems of the present invention is:
preferably, the guide wire 11 is made of nickel-titanium memory alloy, is deviated from the axial direction of the calculus removing basket by a certain angle, and can rotate around the axial direction of the calculus removing basket.
Preferably, the metal tip 10 is made of stainless steel, and is a hemispherical or spherical blunt tip, which is welded to the distal end of the guide wire 11 to protect the inner wall of the bile duct from being scratched by the guide wire 11.
One of the technical solutions adopted to solve the above technical problems of the present invention is:
and replacing the existing stone-taking basket steel wire with a steel wire flexible shaft core to serve as the traction steel wire 4.
Preferably, a steel wire flexible shaft core is made by winding a central steel wire by a plurality of layers of steel wire bundles as the drawing steel wire 4; the near end of the traction steel wire 4 is connected with the handle 1, the far end is connected with the net basket 3, and the traction steel wire penetrates through the outer sheath tube 2 and the connecting block 8.
When the steel wire flexible shaft transmits torque, the flexible shaft core is required to be arranged in a matched flexible shaft sleeve with a smooth and hard inner wall.
Preferably, the flexible shaft sleeve is made of an endoscopic forceps channel 5 with a smooth and hard inner wall.
One of the technical solutions adopted to solve the above technical problems of the present invention is:
the traction steel wire 4 and the sheathed outer sheath tube 2 of the biliary calculus-taking basket are inserted into an endoscope clamp passage 5, and the application of the traction steel wire 4 in effectively transmitting torque along different axial directions is realized based on the working principle that a steel wire flexible shaft can transmit torque along different axial directions.
Preferably, in the process of taking stones under the endoscope, the adjusting handle 1 enables the far-end guide head 7 and the basket 3 to synchronously rotate around the axial direction of the stone-taking basket, so that the relative positions of the guide head 7 and the basket 3 and the target stones are changed, the stone-taking basket can avoid carry obstacles, and the net-off rate of small stones can be reduced.
The invention has the beneficial effects that:
the invention provides a biliary tract calculus-taking basket convenient for taking calculus, which adopts a steel wire flexible shaft core as a traction steel wire, connects a handle and the basket, and is provided with a guide head deviating from the axial direction at the far end of the basket; during operation, the biliary calculus-taking basket is inserted into an endoscope clamping channel, and based on the working characteristic that a steel wire flexible shaft can transmit torque along different axial directions, the aims of synchronously rotating a guide head and the basket through a handle and accurately changing the relative positions of the guide head and the basket and a target calculus are fulfilled; the biliary calculus taking basket can avoid carrying obstacles, and can reduce the calculus net-off rate when the basket is manually tightened and smaller calculus is dragged back. The invention has the characteristics of convenient and accurate operation, high success rate of stone removal, operation time saving and simple manufacturing process, and is suitable for popularization and application.
Drawings
Other objects and results of the present invention will be more readily understood by reference to the following three drawings. The drawings of these figures are illustrated below:
FIG. 1 is a schematic structural diagram of a biliary calculus-removing basket according to the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is an enlarged schematic view of the B-portion guide head of fig. 1.
Wherein 1 represents a handle, 2 represents an outer sheath tube, 3 represents a basket, 4 represents a traction steel wire, 5 represents an endoscope channel, 6 represents a metal sleeve, 7 represents a guide head, 8 represents a connecting block, 9 represents a liquid injection port, 10 represents a metal head, 11 represents a guide wire, and alpha represents an axial included angle between the guide head and the basket.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
The technical solutions of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
The embodiments described below are each a preferred specific example of the present invention. The numerical values, shapes, materials, constituent elements, connection forms of constituent elements, and the like shown in the following examples are merely examples and do not limit the spirit of the present invention. Among the components of the following examples, components that are not described in the embodiments showing the uppermost concept of the present invention will be described as arbitrary components constituting a more preferred embodiment.
Referring to fig. 1-3, a biliary calculus-removing basket convenient for removing calculus is characterized by comprising a handle 1, an outer sheath tube 2, a basket 3 and a traction steel wire 4 which are connected in sequence.
The basket 3 is provided with an off-axial guide head 7 at the distal end.
The guide head 7 is composed of a guide wire 11 and a metal head 10 at the far end of the guide wire 11.
The traction steel wire 4 is made of a steel wire flexible shaft core.
The steel wire flexible shaft core is formed by winding a central steel wire by a plurality of layers of steel wire bundles, and needs to be arranged in a matched steel wire flexible shaft sleeve when torque is transmitted.
The steel wire flexible shaft sleeve is an endoscope clamping channel 5.
The invention provides a biliary calculus-taking basket convenient for taking calculus; the traction steel wire 4 and the outer sheath tube 2 of the biliary calculus-taking basket are arranged in the endoscope clamp passage 5, and the function of effectively transmitting torque of the traction steel wire 4 along different axial directions is realized on the basis of the working principle that the shaft core of a steel wire flexible shaft can transmit torque along different axial directions; and then get the stone in-process under the endoscope, adjustment handle 1 makes distal end guide head 7 and basket 3 around getting stone basket axial rotation to change the relative position of guide head 7 and basket 3 and target calculus, not only make basket 3 can avoid the carry obstacle, still can reduce the net rate of taking off of less calculus, increase the operation success rate, save operation time.
A steel wire bundle is wound along a central steel wire to form a steel wire flexible shaft core, the existing stone-taking basket steel wire is replaced by the steel wire flexible shaft core to serve as a traction steel wire 4, a guide head 7 deviating from the axial direction of the stone-taking basket is arranged at the far end of the basket 3, and an endoscope clamping channel 5 serves as a matched sleeve of the steel wire flexible shaft core.
The first step is as follows: designing a traction steel wire 4, spirally winding a plurality of layers of steel wire bundles around a central steel wire to prepare a flexible shaft core, and replacing the existing stone-taking basket steel wire with the steel wire flexible shaft core to be used as the traction steel wire 4; for example, 4 layers of steel wire bundles are spirally wound around the central steel wire, the twisting directions of adjacent layers of steel wires are opposite, and each layer of steel wire bundles are sequentially wound by 4, 5, 7 and 8 flat steel wires from inside to outside in parallel in a mode of firstly rotating rightwards and then rotating leftwards.
The second step is that: the matched sleeve of the traction steel wire 4 is designed, and the flexible shaft core can synchronously and effectively transmit torque only when being arranged in the flexible shaft sleeve, so the matched flexible shaft sleeve of the traction steel wire 4 is required to be designed. The soft shaft sleeve can not be compressed and deformed when transmitting torque, is in smooth contact with the soft shaft core, and only has constraint counter force along the normal direction of the contact surface. Since the inner wall of the endoscope is made of a smooth and hard metal material, the endoscope channel 5 is used as a flexible shaft sleeve.
The third step: designing a guide head 7 which consists of a guide wire 11 and a guide wire distal end metal head 10, wherein the guide wire 11 is made of nickel-titanium alloy, deviates from the axial direction of the calculus removing basket and can rotate around the axial direction of the calculus removing basket; the metal head 10 is made of stainless steel, and is connected with the far end of the guide wire 11 in a welding mode through a hemispherical or spherical blunt head, so that the inner wall of the bile duct is protected from being scratched by the guide wire 11.
The fourth step: the dimension design, the traction steel wire 4 needs to be arranged in the endoscope clamping channel 5 when working, so the endoscope clamping channels 5 with different inner diameters are matched with the outer sheath tubes 2 and the traction steel wire 4 with different diameters. Therefore, the diameter of the traction steel wire 4 is slightly smaller than the inner diameter of the outer sheath tube 2, the outer diameter of the outer sheath tube 2 is slightly smaller than the inner diameter of the used endoscope clamping passage 5, so that the traction steel wire 4 can freely advance and retreat, and the sufficient traction force can be ensured; for example, the inner diameter of a clamping channel of a fiber choledochoscope used in the operation is 2.2mm, the outer diameter of the corresponding outer sheath tube 2 is 2.0mm, the inner diameter of the corresponding outer sheath tube is 1.8mm, the inner diameter of a channel in a connecting block 8 is designed to be equal to the inner diameter of the outer sheath tube 2, and the diameter of a traction steel wire 4 is designed to be 1.5 mm. Because the flexible shaft core does not need to enter the pancreas and biliary tract through the endoscope clamping passage 5, the length of the shaft core is designed to be equal to or close to that of the endoscope clamping passage 5; for example, the length of the clamp tract of the fibrocholedochoscope used in the operation is 0.9m, and the length of the shaft core can be designed to be about 0.9 m. According to the invention, a certain included angle is formed between the guide wire 11 and the stone taking basket in the axial direction, the length in the radial direction is smaller than the inner diameter of the extrahepatic bile duct, and the metal head 10 is designed to be a blunt head so as to protect the inner wall of the bile duct from being scratched by the guide wire 11; for example, because the inner diameter of the extrahepatic bile duct is more than 4mm in general, the invention designs that the axial included angle between the guide wire 11 and the lithotomy basket is 30 degrees, the length is 4mm, and the diameter of the metal head 10 is 1 mm.
Fifthly, specifically, in the process of taking stones by an endoscope, the biliary tract calculus-taking basket is placed in the endoscope forceps channel 5, when the carry direction of the guide head 7 needs to be adjusted or small stones need to be grabbed, the adjustment handle 1 enables the far-end guide head 7 and the basket 3 to synchronously rotate around the axial direction of the calculus-taking basket, so that the relative positions of the guide head 7 and the basket 3 and the target stones are changed, the calculus-taking basket is enabled to avoid carry obstacles, the net-off probability of the small stones is reduced, the calculus-taking success rate is improved, and the operation time is saved.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.
Claims (9)
1. A biliary calculus-taking basket convenient for taking calculus is characterized by comprising a handle, an outer sheath tube, a basket and a traction steel wire.
2. The biliary calculus extraction basket as recited in claim 1, wherein the basket has a leading end at a distal end thereof offset from an axial direction of the basket.
3. The biliary calculus extraction basket as recited in claim 2, wherein the guiding head is composed of a guiding wire and a metal head.
4. The biliary calculus extraction basket as claimed in claim 1, wherein the pulling wire is a flexible steel wire shaft core, and is disposed in the flexible steel wire shaft sleeve for torque transmission.
5. The biliary calculus extraction basket as claimed in claim 4, wherein the operation end of the pulling wire is connected to the handle, and the distal end of the pulling wire is connected to the basket and extends through the sheath tube and the connecting block.
6. The connecting block is tightly connected with the outer sheath tube, and the inner diameter of a channel of the connecting block is equal to that of the outer sheath tube.
7. The biliary calculus extraction basket as recited in claim 4, wherein the steel wire flexible shaft sleeve is an endoscopic forceps channel.
8. The biliary calculus-taking basket convenient for taking calculus is characterized in that the biliary calculus-taking basket is applied to the function of effectively transmitting torque along different axial directions by drawing steel wires based on the working principle that a steel wire flexible shaft can transmit torque along different axial directions.
9. The application of claim 8, wherein during the endoscopic stone extraction, the handle is adjusted to enable the distal guide head and the basket to synchronously rotate around the axial direction of the stone extraction basket, so that the relative positions of the guide head and the basket alloy wires and the target stone are changed, the stone extraction basket disclosed by the invention can avoid carry obstacles, and the application of the invention can reduce the stone extraction rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388691.7A CN113100874A (en) | 2021-04-12 | 2021-04-12 | Biliary tract calculus-taking basket convenient for taking calculus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110388691.7A CN113100874A (en) | 2021-04-12 | 2021-04-12 | Biliary tract calculus-taking basket convenient for taking calculus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113100874A true CN113100874A (en) | 2021-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110388691.7A Withdrawn CN113100874A (en) | 2021-04-12 | 2021-04-12 | Biliary tract calculus-taking basket convenient for taking calculus |
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| Country | Link |
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| CN (1) | CN113100874A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202761370U (en) * | 2012-04-26 | 2013-03-06 | 常州乐奥医疗科技有限公司 | Novel gallstone removing device |
| CN103750881A (en) * | 2014-02-14 | 2014-04-30 | 胡兵 | Snare integrating cold and heat |
| CN203710079U (en) * | 2014-01-26 | 2014-07-16 | 陈会军 | Gastric calculus breaking device |
| CN204765805U (en) * | 2015-04-30 | 2015-11-18 | 石家庄曼迪恩生物科技有限公司 | That takes elbow gets stone basket |
-
2021
- 2021-04-12 CN CN202110388691.7A patent/CN113100874A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202761370U (en) * | 2012-04-26 | 2013-03-06 | 常州乐奥医疗科技有限公司 | Novel gallstone removing device |
| CN203710079U (en) * | 2014-01-26 | 2014-07-16 | 陈会军 | Gastric calculus breaking device |
| CN103750881A (en) * | 2014-02-14 | 2014-04-30 | 胡兵 | Snare integrating cold and heat |
| CN204765805U (en) * | 2015-04-30 | 2015-11-18 | 石家庄曼迪恩生物科技有限公司 | That takes elbow gets stone basket |
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Application publication date: 20210713 |
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| WW01 | Invention patent application withdrawn after publication |