CN212547091U - Minimally invasive bendable negative pressure suction stone-removing sheath tube - Google Patents
Minimally invasive bendable negative pressure suction stone-removing sheath tube Download PDFInfo
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- CN212547091U CN212547091U CN202020594436.9U CN202020594436U CN212547091U CN 212547091 U CN212547091 U CN 212547091U CN 202020594436 U CN202020594436 U CN 202020594436U CN 212547091 U CN212547091 U CN 212547091U
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- bendable
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Abstract
The utility model discloses a clear stone sheath pipe of wicresoft's flexible negative pressure attraction, including being responsible for, with be responsible for the side pipe that is linked together, install in the bending control who is responsible for upper portion and detain and be used for the orificial sealed cap of shutoff sheath, be responsible for four steel wires that are the symmetric distribution in the pipe wall, the steel wire lower extreme is fixed in and is responsible for the bottom, and the upper end is detained with bending control and is connected, and it is the flexible section to be responsible for the bottom. The utility model discloses can prevent because of the too high harmful effects who causes of bile duct internal pressure, the target bile duct is changeed to the sheath pipe, can effectively shorten operation time, reduces the complication incidence.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to clear stone sheath pipe is attracted to wicresoft's flexible negative pressure.
Background
Intrahepatic and extrahepatic bile duct stones are common diseases and frequently encountered diseases in biliary tract system diseases, and minimally invasive percutaneous transhepatobiliary calculus lithotripsy and extrahepatic bile duct stone removal becomes a main operation mode of hepatobiliary calculus. The traditional sinus canal supporting tube mostly uses an expansion tube type KZ, a choledochoscope enters from the inside of the tube type, and after a calculus is broken by utilizing a sheath tube cutting, forceps jaws of a calculus removing forceps or an air pressure ballistic lithotripter, the calculus is passively discharged through the sheath tube by low-pressure perfusion of a common transfusion bag in the choledochoscope or liquid injection of a hydraulic perfusion pump. In the process of removing the calculus, the choledochoscope is matched with the sheath tube for use, the sheath tube is used for reaching a certain bile duct in the body of a patient, and then the established channel is used for extending into the endoscope and related instruments for carrying out treatment such as calculus breaking and removing.
The sheath tube widely used in clinic at present has the following defects: 1. the choledochoscope needs to be completely withdrawn to the outside of the sheath for discharging larger stones, so that the time for entering and exiting the sheath is increased, the operation time is prolonged, and the operation difficulty of doctors is increased; 2. the liquid and the calculus are passively discharged (overflow), the pressure in the bile duct is high and reaches 50cmH2O, and when the biliary tract pressure exceeds 1.96kPa (20 cmH) under physiological conditions2O) may cause bile reflux because the capillary bile duct is directly communicated with the liver sinus, when infection exists, bacteria and toxin enter blood through the liver sinus to cause bacteremia or sepsis, and simultaneously, due to high biliary tract pressure, liquid is discharged through the opening of the common bile ductWhen the traditional Chinese medicine composition enters the gastrointestinal tract, the postoperative abdominal distension and vomiting incidence rate of a patient is high; 3. due to the physiological anatomical characteristics of the bile duct structure, the angle between the bile duct where the calculus of some patients is located and the established channel is large in clinic, the sheath tube is difficult to reach the position where the calculus is located, the calculus is difficult to remove, the calculus residue rate after operation is increased or the calculus removing channel needs to be increased to remove the calculus, and the risks of operation trauma, postoperative bleeding, biliary fistula and infection are increased.
There is application number CN 201821263898.1's utility model patent, discloses a novel stone guide sheath is got to ureter negative pressure, get stone sheath pipe main part including expansion tube main part and negative pressure, this utility model can effectively prevent the rubble, inhale the stone, stone blocking mirror phenomenon when getting the stone. The invention patent with the application number of CN201710951628.3 discloses a bendable ureteral sheath, which comprises an expansion tube, a sheath tube joint, a fixed joint, a traction steel wire, a locking mechanism, a negative suction joint and an adjusting device, wherein the sheath tube consists of a semi-flexible non-bendable section and a flexible bendable section which can be bent towards two directions. The above prior art proposes a ureteral sheath structure with negative pressure or bendable head, which can improve the disadvantages of the prior art to some extent, but still cannot completely overcome all the disadvantages in clinical application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wicresoft's flexible negative pressure attracts clear stone sheath pipe can prevent because of the too high harmful effects who causes of bile duct internal pressure, and the target bile duct is changeed to the sheath pipe, can effectively shorten operation time, reduces complication incidence.
In order to realize the technical purpose, the technical effect is achieved, and the utility model discloses a following technical scheme solves above-mentioned problem:
the minimally invasive bendable negative pressure suction stone removing sheath tube comprises a main tube, a side tube communicated with the main tube, a bending control buckle arranged on the upper portion of the main tube and a sealing cap used for plugging the opening of a sheath tube, wherein four steel wires are symmetrically distributed in the tube wall of the main tube, the lower ends of the steel wires are fixed at the bottom of the main tube, the upper ends of the steel wires are connected with the bending control buckle, and the tube wall of the bottom of the main tube is a bendable section.
Preferably, the bendable section of the pipe wall at the bottom of the main pipe is of a three-layer structure and comprises an outer layer, an inner layer and a middle layer, and the middle layer is internally provided with annular steel wires.
Preferably, the bending control buckle is U-shaped and is hinged to the main pipe through a hinge shaft.
Preferably, the sealing cap is a truncated cone with a through hole, the upper part of the through hole is a truncated cone hole, and the lower part of the through hole is a cylindrical hole.
Above-mentioned scheme is preferred, and the main pipe bottom tube wall mouth is circular arc transition.
Preferably, the length of the main pipe is 20cm, the inner diameter of the main pipe can be 18F, 20F and 22F, and scales are marked on the pipe wall of the main pipe.
Preferably, the length of the side pipe is 3cm, the distance between the center of the pipe orifice and the top of the main pipe is 2cm, and the included angle between the center of the pipe orifice and the top of the main pipe is 70 degrees.
Preferably, the length of the bendable section of the pipe wall at the bottom of the main pipe is 1.5cm, and the bendable angle is 0-10 degrees.
Above-mentioned scheme is preferred, and the pipe wall is worn out to the steel wire upper end and is buckled with the bending control and be connected.
Compared with the prior art, the utility model has the advantages of it is following:
1. the side tube is connected with a negative pressure suction pipe, the stone removing efficiency is obviously improved, and because the bile duct is filled with low pressure, the liquid entering the gastrointestinal tract is obviously reduced or eliminated, the incidence rate of nausea and vomiting after operation is reduced, the incidence rate of chilliness, fever, abdominal pain and the like after operation is obviously reduced, and the incidence rate of bacteremia and septicemia is obviously reduced.
2. The sheath tube is provided with a bendable section, so that the bile duct which needs to be reached can be conveniently entered, the calculus with a larger angle can be conveniently removed, the calculus removing rate is increased, the probability of re-puncturing to establish the sinus is reduced, and the operation risk is reduced.
3. But the three layer construction of bending section makes the sheath pipe flexible but non-deformable, has hardness and compliance concurrently, when preventing to the excessive damage of patient's internal organs, still can assist cutting, broken calculus.
4. The design of side pipe and person in charge distance and angle does not do benefit to the calculus suction and does not influence the operation of choledochoscope, when taking out great calculus the choledochoscope only need move back to more than the side pipe can, need not to withdraw from the sheath pipe completely, the operation is simpler, reduces and passes in and out the sheath pipe time repeatedly, shortens the operation time.
5. The design of the sealing cap is suitable for being sleeved in a choledochoscope, the time for sealing the sheath tube and the sealing time can be determined according to the condition in the operation, and air can be prevented from entering the sheath tube and the bile duct to influence the clear visual field and block the removal of the calculus while the calculus removing speed is ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic sectional view taken along line a-a of fig. 2.
Fig. 4 is a schematic sectional view taken along line B-B of fig. 2.
And (3) identifying the figure number: 1. the bending test device comprises a main pipe, 2, a test pipe, 3, a bending control buckle, 4, a sealing cap, 5, a steel wire, 6, an annular steel wire, 7, an outer layer, 8, an inner layer, 9 and a hinge shaft.
Detailed Description
The present invention will be further described with reference to the following examples, but the present invention is not limited to these examples.
The minimally invasive bendable negative pressure suction stone removing sheath catheter comprises a main catheter 1, a side catheter 2 communicated with the main catheter 1, a bending control buckle 3 arranged on the upper portion of the main catheter 1 and a sealing cap 4 used for plugging the opening of a sheath, wherein four steel wires 5 are symmetrically distributed in the catheter wall of the main catheter 1, the lower ends of the steel wires 5 are fixed at the bottom of the main catheter 1, the upper ends of the steel wires are connected with the bending control buckle 3, and the catheter wall at the bottom of the main catheter 1 is a bendable section.
The bendable section of the pipe wall at the bottom of the main pipe 1 is of a three-layer structure, as shown in the attached drawing 3, and comprises an outer layer 7, an inner layer 8 and a middle layer, wherein an annular steel wire 6 is arranged in the middle layer, and four steel wires 5 also penetrate through the middle layer to be connected to the bottom of the main pipe 1.
The bending control buckle 3 is U-shaped as shown in figures 1 and 4, is hinged on the main pipe 1 through a hinge shaft 9, and can be shifted up and down.
The sealing cap 4 is a truncated cone with a through hole, as shown in fig. 1 and 2, the upper part of the through hole is a truncated cone hole, and the lower part of the through hole is a cylindrical hole.
The wall opening at the bottom of the main pipe 1 is in arc transition, so that the damage of the sheath pipe in the biliary tract can be reduced, as shown in the attached figures 1 and 2.
The length of the main pipe 1 is 20cm, the inner diameter of the main pipe can be 18F, 20F and 22F, and scales are marked on the pipe wall of the main pipe 1, and the embedding depth can be observed.
The length of the side tube 2 is 3cm, the distance between the center of the tube opening and the top of the main tube 1 is 2cm, the included angle between the tube opening and the main tube 1 is 70 degrees, the calculus can be sucked out conveniently, and the operation of the choledochoscope is not influenced.
The bendable section of the bottom pipe wall of the main pipe 1 is 1.5cm, and the bendable angle is 0-10 degrees, so that the main pipe is convenient to enter a bile duct to be reached and is beneficial to removing stones with larger angles.
The upper end of the steel wire 5 penetrates through the pipe wall and is connected with the bending control buckle 3, as shown in the attached figure 4.
As a further preference of this embodiment, the main tube body is coated with a hydrophilic coating, and the tube body is smooth and has certain hardness and elasticity.
The working principle of the embodiment is as follows:
under the guidance of B-ultrasonic, a puncture needle is punctured into a target bile duct at a puncture point, a duct guide wire is placed, the skin of the puncture point is cut, a sinus tract is gradually dilated by an expander under the guidance of the guide wire, a minimally invasive bendable negative pressure suction stone-clearing sheath tube is placed, and an artificial sinus tract which is directly communicated with the target dilated hepatobiliary duct is established. The choledochoscope is sleeved into the sealing cap 4, then enters the intrahepatic bile duct and the common bile duct along the upper pipe orifice of the main pipe 1, the choledochoscope channel is used for receiving the washing liquid, the side pipe 2 is connected with the negative pressure suction device, and the negative pressure suction is adjusted to be about 0.01-0.02 MPa. At this time, the sealing cap 4 is only sleeved on the choledochoscope and is far away from the sheath tube, and air can still enter from the upper tube orifice of the main tube 1. At the moment, the pressure in the bile duct is positive, air is sucked out from the negative pressure suction side tube 2 and does not enter the bile duct, so that the operation visual field is not influenced, and the operation of crushing stones is facilitated. Broken stones and liquid are discharged from a gap between the choledochoscope and the main pipe 1 and then are sucked out from the negative pressure suction side pipe 2, and the broken stones are removed by the combination of crushing, sucking and flushing.
When the crushed stones are more, the sealing cap 4 sleeved on the hard choledochoscope is pushed to the upper pipe orifice of the sheath pipe to seal the sheath pipe, so that air is prevented from entering. Flushing fluid enters the biliary tract from the choledochoscope channel, and broken stones and liquid are discharged from the clearance between the choledochoscope and the main tube 1 and then are sucked out from the negative pressure suction side tube 2. At the moment, negative pressure is formed in the sheath tube, so that the discharge of the broken stone, floccule and liquid in the bile duct out of the body can be accelerated.
When the bile duct with larger angle is used for calculus removal treatment, the traction steel wire 5 is pulled by pulling the bending control buckle 3 up and down, so that the bendable section at the bottom of the main tube 1 of the sheath tube can be pulled to bend towards two directions, and the sheath tube is controlled to enter the target bile duct.
Claims (9)
1. Minimally invasive bendable negative pressure suction stone-removing sheath tube, which is characterized in that: including being responsible for (1), being responsible for side pipe (2) that (1) is linked together, installing in being responsible for the bending control on (1) upper portion and detaining (3) and be used for the orificial sealing cap of shutoff sheath (4), be responsible for in (1) pipe wall and have four steel wires (5) that are the symmetric distribution, steel wire (5) lower extreme is fixed in and is responsible for (1) bottom, and the upper end is detained (3) with the bending control and is connected, be responsible for (1) bottom pipe wall and be the bendable section.
2. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the bendable section of the pipe wall at the bottom of the main pipe (1) is of a three-layer structure and comprises an outer layer (7), an inner layer (8) and a middle layer, wherein an annular steel wire (6) is arranged in the middle layer.
3. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the bending control buckle (3) is U-shaped and is hinged to the main pipe (1) through a hinge shaft (9).
4. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the sealing cap (4) is a cone frustum with a through hole, the upper part of the through hole is a cone frustum hole, and the lower part of the through hole is a cylindrical hole.
5. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the pipe wall opening at the bottom of the main pipe (1) is in circular arc transition.
6. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the length of the main pipe (1) is 20cm, the inner diameter of the main pipe can be 18F, 20F and 22F, and scales are marked on the pipe wall of the main pipe (1).
7. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the length of the side pipe (2) is 3cm, the distance between the center of the pipe orifice and the top of the main pipe (1) is 2cm, and the included angle between the side pipe and the main pipe (1) is 70 degrees.
8. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the length of the bendable section of the bottom pipe wall of the main pipe (1) is 1.5cm, and the bendable angle is 0-10 degrees.
9. The minimally invasive bendable negative pressure suction lithotomy sheath of claim 1, characterized in that: the upper end of the steel wire (5) penetrates through the pipe wall to be connected with the bending control buckle (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594436.9U CN212547091U (en) | 2020-04-20 | 2020-04-20 | Minimally invasive bendable negative pressure suction stone-removing sheath tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020594436.9U CN212547091U (en) | 2020-04-20 | 2020-04-20 | Minimally invasive bendable negative pressure suction stone-removing sheath tube |
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| Publication Number | Publication Date |
|---|---|
| CN212547091U true CN212547091U (en) | 2021-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020594436.9U Expired - Fee Related CN212547091U (en) | 2020-04-20 | 2020-04-20 | Minimally invasive bendable negative pressure suction stone-removing sheath tube |
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| CN (1) | CN212547091U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694346A (en) * | 2021-07-05 | 2021-11-26 | 深圳麦普奇医疗科技有限公司 | Percutaneous introducer for percutaneous hepatic puncture biliary drainage treatment |
-
2020
- 2020-04-20 CN CN202020594436.9U patent/CN212547091U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113694346A (en) * | 2021-07-05 | 2021-11-26 | 深圳麦普奇医疗科技有限公司 | Percutaneous introducer for percutaneous hepatic puncture biliary drainage treatment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210219 |