CN218852762U - Calculus plugging device - Google Patents
Calculus plugging device Download PDFInfo
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- CN218852762U CN218852762U CN202222412712.7U CN202222412712U CN218852762U CN 218852762 U CN218852762 U CN 218852762U CN 202222412712 U CN202222412712 U CN 202222412712U CN 218852762 U CN218852762 U CN 218852762U
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Abstract
The utility model belongs to the technical field of medical instrument, a calculus plugging device is related to. The calculus plugging device comprises an inner core, an outer sheath tube, a connecting tube, a first stop block and a developing head end, wherein the inner core penetrates through the outer sheath tube and is connected with the rear end of the connecting tube; the developing head end comprises an internal core wire and a developing sleeve coated on the internal core wire, the rear end of the internal core wire is connected with the front end of the connecting pipe, the internal core wire extends along a curve, and the cross-sectional area of the internal core wire along the direction perpendicular to the extending direction of the internal core wire is gradually reduced from the rear end to the front end; the first stop block is sleeved on the connecting pipe; when the inner core is pulled, the front end of the inner core can be pulled into or extend out of the outer sheath pipe; when the front end of the inner core is pulled into the outer sheath tube, the first stop block can be abutted against the outer sheath tube. The calculus plugging device can easily pass through calculus, and reduces the difficulty of operation.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, especially, relate to a calculus plugging device.
Background
Urinary calculus is one of the most common diseases in urology surgery, the incidence rate of the urinary calculus is found to be about 2% -20% in worldwide investigation and research, and the urinary calculus is most common according to different calculus positions, namely kidney calculus and ureteral calculus. Hydronephrosis caused by the obstruction of the urinary system caused by calculus can damage kidney function, and calculus with infection can cause general discomfort such as fever.
At present, conservative treatment, open surgery, external Shock Wave Lithotripsy (ESWL), percutaneous nephroscopy (PCNL) and Ureteroscopy (URL) are mainly used as methods for treating the kidney stones, wherein the ESWL and the PCNL are relatively common methods, the ESWL is suitable for treating stones with the diameter of less than 2cm, large pyelolithiasis and infrarenal calyx calculi, and the main method for treating the ureteral calculi is Ureteroscopy (URL). The operation has obvious curative effect, high safety and wide clinical application. However, in the operation, due to the energy of holmium laser lithotripsy, the calculus fragments broken by holmium laser can move towards the upper section of the ureter and the renal pelvis, so that the success rate of lithotripsy and calculus removal is reduced, and the treatment effect is influenced. Not only increasing the pain of the patient, prolonging the operation time, but also increasing the risk of infection and fever after the operation and the medical cost. Therefore, in the prior art, a calculus plugging device is generally used for plugging calculus fragments, so that the calculus fragments are prevented from moving towards the upper ureter and the renal pelvis.
The head end of the existing stone stopper is a straight head, so that the existing stone stopper is easy to directly contact with stones in use, is difficult to pass through gaps between the stones and ureters, and can smoothly perform an operation only by adjusting the body positions and the stopper shapes for many times. In addition, inaccurate positioning due to the fact that the calculus obstructs the sight line can occur in the operation, the holmium laser can affect the blocking device when the holmium laser is difficult to keep a good blocking position with the calculus, the holmium laser is close to the calculus, the distance is long, the escape space of the calculus is large, the calculus blocking rate is low, residual calculus fragments are difficult to capture, follow-up symptoms are left, and more pain is brought to a patient.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: aiming at the technical problem that the head end of the existing calculus plugging device is not easy to pass through the gap between the calculus and the ureter, the calculus plugging device is provided.
In order to solve the technical problem, an embodiment of the present invention provides a stone blocking device, which comprises an inner core, an outer sheath tube, a connecting tube, a first stop block and a developing head end, wherein the inner core passes through the outer sheath tube and is connected with the rear end of the connecting tube;
the developing head end comprises an internal core wire and a developing sleeve coated on the internal core wire, the rear end of the internal core wire is connected with the front end of the connecting pipe, the internal core wire extends along a curve, and the cross-sectional area of the internal core wire along the direction perpendicular to the extending direction of the internal core wire is gradually reduced from the rear end to the front end;
the first stop block is sleeved on the connecting pipe;
when the inner core is pulled, the front end of the inner core can be pulled into or extend out of the outer sheath pipe; when the front end of the inner core is pulled into the outer sheath tube, the first stop block can be abutted against the outer sheath tube.
According to the utility model discloses calculus plugging device makes built-in core silk is the gradually thin curved structure of toper, and will the development sleeve cladding is in on the built-in core silk to form the development head end that has development function and curved structure simultaneously. The front end of the developing head end is the thinnest and the softest part, so that the developing head has good guidance and can effectively reduce the risk of tissue damage. In addition, the developing head end can change with the body structure change in the use, can not cause the damage to human tissue, can easily pass through the calculus, reduces the operation degree of difficulty. Meanwhile, the first stop block can prevent the developing head end from being pulled into the outer sheath tube along with the inner core, so that the developing head end can be prevented from being polluted. The utility model discloses calculus plugging device of embodiment can be used to ureter soft lens rubble operation.
Optionally, the front end of the developing sleeve is formed with a circular arc surface.
Optionally, the outer edge of the first stopper is formed with a chamfer.
Optionally, the inner core comprises a linear core wire section and a spiral core wire section, and the spiral core wire section can pass through the outer sheath tube to be connected with the rear end of the connecting tube;
when the inner core is pulled, the spiral core wire section can be pulled into or extend out of the outer sheath pipe.
Optionally, a second stopper is sleeved on the linear core wire section, and the outer sheath tube is located between the first stopper and the second stopper;
when the spiral core wire section extends out of the outer sheath tube, the second stop block can be abutted against the outer sheath tube.
Optionally, the front end of the outer sheath is provided with an annular double-band mark and an annular single-band mark;
the annular double-band mark comprises a first annular black mark band which is 9mm away from the foremost end of the outer sheath and a second annular black mark band which is 11mm away from the foremost end of the outer sheath;
the annular single band marker comprises a third annular black marker band which is 20mm away from the foremost end of the outer sheath tube;
the widths of the first annular black mark band, the second annular black mark band and the third annular black mark band are all 1mm.
Optionally, the connecting tube is welded between the inner core and the inner core wire;
the first stop block is welded with the front end of the inner core, the connecting pipe and the built-in core wire.
Optionally, the outer wall of the inner core is sleeved with a heat shrink tube.
Optionally, the material of the inner core and the inner core wire is a memory alloy.
Optionally, the stone occluder further comprises a handle, and the rear end of the inner core is connected with the handle.
Drawings
Fig. 1 is a schematic view of a stone blocking device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a stone blocking device according to an embodiment of the present invention
FIG. 3 is a schematic view of the connection tube of FIG. 1;
FIG. 4 is a schematic view of the developer head end of FIG. 1;
fig. 5 is a schematic view at the front end of the outer sheath of fig. 1.
The reference numerals in the specification are as follows:
1. an inner core; 11. a linear core filament section; 12. a spiral core wire segment;
2. an outer sheath tube; 21. a circular double-band mark; 211. a first annular black marker band; 212. a second annular black marker band; 22. a ring-shaped single belt mark; 221. a third annular black mark band;
3. a connecting pipe;
4. a first stopper;
5. a developing head end; 51. a core wire is arranged inside; 52. a developing sleeve;
6. a second stopper;
7. a handle.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
As shown in fig. 1 to 5, the embodiment of the present invention provides a calculi occluder, which comprises an inner core 1, an outer sheath 2, a connecting tube 3, a first stop block 4 and a developing head end 5, wherein the inner core 1 passes through the outer sheath 2 and the rear end of the connecting tube 3.
The developing head end 5 comprises an internal core wire 51 and a developing sleeve 52 coated on the internal core wire 51, the rear end of the internal core wire 51 is connected with the front end of the connecting pipe 3, the internal core wire 51 extends along a curve, and the cross-sectional area of the internal core wire 51 along the direction perpendicular to the extending direction of the internal core wire is gradually reduced from the rear end to the front end.
The first stop block 4 is sleeved on the connecting pipe 3.
When the inner core 1 is pulled, the front end of the inner core 1 can be pulled into or extend out of the outer sheath tube 2. When the front end of the inner core 1 is pulled into the outer sheath tube 2, the first stop block 4 can be abutted against the outer sheath tube 2.
The embodiment of the utility model provides a calculus plugging device makes built-in core silk 51 is the tapered curved structure of toper, and will developing sleeve 52 cladding is in on the built-in core silk 51 to form the developing head end 5 that has developing function and curved structure simultaneously. The front end of the developing head end 5 is the thinnest and the softest part, so that the developing head has good guidance and can effectively reduce the risk of tissue damage. In addition, the developing head end 5 can change with the change of the body structure in the use process, does not damage human tissues, can easily pass through calculi, and reduces the operation difficulty. Meanwhile, the first stopper 4 is provided to prevent the developing head end 5 from being pulled into the sheath tube 2 along with the core 1, so that the developing head end 5 can be prevented from being contaminated. The utility model discloses calculus plugging device of embodiment can be used to ureter soft mirror rubble operation.
In one embodiment, as shown in fig. 4, the front end of the developing sleeve 52 is formed with a circular arc surface. The developing sleeve 52 is made of a special material, has good biocompatibility, and has a developing function after being specially processed.
In one embodiment, as shown in fig. 3, the outer edge of the first stopper 4 is formed with a chamfer. By chamfering the first stopper 4, no abrasion is caused to the mucous membrane of the human body.
In one embodiment, as shown in fig. 1 and 2, the inner core 1 includes a linear core wire segment 11 and a spiral core wire segment 12, and the spiral core wire segment 12 can pass through the outer sheath tube 2 and connect with the back end of the connecting tube 3. When the inner core 1 is pulled, the spiral core wire section 12 can be pulled into or extend out of the outer sheath tube 2, so that the spiral core wire section 12 enters an endoscope working channel.
In one embodiment, as shown in fig. 1 and fig. 2, a second stopper 6 is sleeved on the linear core wire segment 11, and the sheath tube 2 is located between the first stopper 4 and the second stopper 6.
When the spiral core wire section 12 extends out of the sheath tube 2, the second stopper 6 can abut against the sheath tube 2 to limit the maximum stroke of the inner core 1, and meanwhile, the linear core wire section 11 can be prevented from completely entering the sheath tube 2.
In one embodiment, as shown in fig. 1 and 5, the front end of the sheath tube 2 is provided with a ring-shaped double-band mark 21 and a ring-shaped single-band mark 22.
Further, the annular double band marker 21 includes a first annular black marker band 211 at a distance of 9mm from the foremost end of the outer sheath 2 and a second annular black marker band 212 at a distance of 11mm from the foremost end of the outer sheath 2.
The annular single band marker 22 includes a third annular black marker band 221 at a distance of 20mm from the foremost end of the outer sheath 2.
Each black mark band (including an annular black mark band 211, a second annular black mark band 212 and a third annular black mark band 221) is made of special ink, is respectively positioned on the outer sheath tube 2, has good visibility when observed under an endoscope, can be used for accurately positioning the calculus stopper, ensures that the blocking position in the operation is good, and improves the calculus removing rate.
Specifically, after the head end 5 passes through the calculus during the operation, the observation can be carried out by using an endoscope, and if the annular double-band mark 21 cannot be seen, but the annular single-band mark 22 can be seen, the stone stopper is placed well, so that the calculus can be broken. If the conditions are not met, the position of the calculus plugging device is adjusted through the handle until the conditions are met, and therefore a good calculus smashing effect can be achieved.
Preferably, the widths of the first, second, and third annular black mark bands 211, 212, and 221 are all 1mm.
In one embodiment, as shown in fig. 3, the connecting tube 3 is welded between the inner core 1 and the inner core wire 51. The first stopper 4 is welded to the front end of the core 1, the connection pipe 3, and the internal core wire 51.
Preferably, the material of the connecting tube 3 and the first stopper 4 is stainless steel. The inner core 1 and the built-in core wire 51 are made of memory alloy.
In one embodiment, the outer wall of the inner core 1 is sleeved with a heat-shrinkable tube. The heat-shrinkable tube is subjected to heat-shrinkable plastic coating by adopting a high-molecular heat-shrinkable tube so as to reduce the damage to mucosa in the operation.
In one embodiment, as shown in fig. 1 and 2, the stone occluding device further comprises a handle 7, and the rear end of the inner core 1 is connected with the handle 7.
The handle 7 is connected with the inner core 1 in a rotary pressing mode, the handle 7 can drive the inner core 1 to carry out axial regulation, and the shape and the position of the calculus plugging device can be adjusted by pulling or rotating the handle 7 in an operation.
Use when calculus plugging device carries out ureter rubble operation, at first dip approximately 5 ~ 10s in the saline with the development head end 5 of calculus plugging device, make development head end 5 moist, and then the 2 rear ends of outer sheath pipe are held to the one hand, and the other hand pulling handle 7 draws in outer sheath pipe 2 with the spiral core silk section 12 of inner core 1, treats that spiral core silk section 12 draws in completely, the front end of outer sheath pipe 2 will support first dog 4. Then, inserting the endoscope into a working channel of the endoscope until the front end of the calculus blocking device extends out of the endoscope; the position of the calculus stopper is adjusted to enable the bent tip of the developing head end 5 to penetrate through a calculus gap, and the outer sheath tube 2 is pushed to completely surpass calculus. Observing through an endoscope, adjusting the positions of the annular double-belt mark 21 and the annular single-belt mark 22, holding the rear end of the calculus plugging device with one hand, pushing the inner core 1 with one hand until the outer sheath tube 2 props against the second stopper 6, ensuring that the calculus plugging device is completely released, and beginning to crush calculus. After the operation is finished, the calculus plugging device is directly pulled to pull the calculus into the guide sheath, and then the spiral core wire section 12 of the calculus plugging device is pulled into the outer sheath tube 2 to be withdrawn from the endoscope or withdrawn from the body together with the endoscope.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.
Claims (10)
1. A calculus plugging device is characterized by comprising an inner core, an outer sheath tube, a connecting tube, a first stop block and a developing head end, wherein the inner core penetrates through the outer sheath tube and is connected with the rear end of the connecting tube;
the developing head end comprises an internal core wire and a developing sleeve coated on the internal core wire, the rear end of the internal core wire is connected with the front end of the connecting pipe, the internal core wire extends along a curve, and the cross-sectional area of the internal core wire along the direction perpendicular to the extending direction of the internal core wire is gradually reduced from the rear end to the front end;
the first stop block is sleeved on the connecting pipe;
when the inner core is pulled, the front end of the inner core can be pulled into or extend out of the outer sheath pipe; when the front end of the inner core is pulled into the outer sheath tube, the first stop block can be abutted against the outer sheath tube.
2. The stone stopper of claim 1 wherein the front end of the visualization cannula is formed with a radiused surface.
3. The stone stopper of claim 1, wherein an outer edge of the first stop is formed with a chamfer.
4. The stone occluder of claim 1, wherein the inner core comprises a wire-shaped core wire segment and a helical core wire segment, the helical core wire segment being connectable through the outer sheath tube to the rear end of the connecting tube;
when the inner core is pulled, the spiral core wire section can be pulled into or extend out of the outer sheath tube.
5. The stone occluder of claim 4, wherein said linear core wire section is sleeved with a second stop, said outer sheath tube being positioned between said first stop and said second stop;
when the spiral core wire section extends out of the outer sheath tube, the second stop block can abut against the outer sheath tube.
6. The stone occluder of claim 1, wherein the front end of the outer sheath is provided with an annular double-band marker and an annular single-band marker;
the annular double-band mark comprises a first annular black mark band which is 9mm away from the foremost end of the outer sheath and a second annular black mark band which is 11mm away from the foremost end of the outer sheath;
the annular single band marker comprises a third annular black marker band at a distance of 20mm from the foremost end of the outer sheath;
the widths of the first annular black mark band, the second annular black mark band and the third annular black mark band are all 1mm.
7. The stone occluder of claim 1, wherein said connecting tube is welded between said inner core and said inner core wire;
the first stop block is welded with the front end of the inner core, the connecting pipe and the built-in core wire.
8. The stone occluder of claim 1, wherein the outer wall of the inner core is jacketed with heat shrink tubing.
9. The stone occluder of claim 1, wherein the inner core and the inner core wire are both made of a memory alloy.
10. The stone occluder of claim 1, further comprising a handle to which the rear ends of the inner cores are attached.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222412712.7U CN218852762U (en) | 2022-09-09 | 2022-09-09 | Calculus plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222412712.7U CN218852762U (en) | 2022-09-09 | 2022-09-09 | Calculus plugging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218852762U true CN218852762U (en) | 2023-04-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222412712.7U Active CN218852762U (en) | 2022-09-09 | 2022-09-09 | Calculus plugging device |
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| Country | Link |
|---|---|
| CN (1) | CN218852762U (en) |
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- 2022-09-09 CN CN202222412712.7U patent/CN218852762U/en active Active
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