CN110720969A - Disposable minimally invasive dilation drainage kit - Google Patents
Disposable minimally invasive dilation drainage kit Download PDFInfo
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- CN110720969A CN110720969A CN201910990866.4A CN201910990866A CN110720969A CN 110720969 A CN110720969 A CN 110720969A CN 201910990866 A CN201910990866 A CN 201910990866A CN 110720969 A CN110720969 A CN 110720969A
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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
- A61B17/34—Trocars; Puncturing needles
- A61B17/3415—Trocars; Puncturing needles for introducing tubes or catheters, e.g. gastrostomy tubes, drain catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M29/00—Dilators with or without means for introducing media, e.g. remedies
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Abstract
The invention discloses a disposable minimally invasive dilation drainage kit. The minimally invasive dilation drainage kit comprises a dilation tube, wherein the dilation tube comprises a telescopic multi-stage dilation branch tube and a contraction tube. The puncture part is expanded by the expansion tube along the guide wire, the puncture part is expanded by the expansion branch tube with the smallest outer diameter, the rigid traction wire is pulled by rotating the rotating ring after the expansion branch tube is expanded, the expansion branch tube with the smallest outer diameter is driven to shrink into the next expansion branch tube, the puncture part is expanded by the next expansion tube, and the like, finally the expansion branch tube with the largest outer diameter is shrunk into the contraction tube, the puncture part is expanded by the contraction tube, the in-situ multi-stage expansion can be realized, the expansion tube of each model is not required to be withdrawn after the expansion of the expansion tube is finished in the whole process, and the expansion tube of the next model is changed to continue the expansion, so that the operation time is favorably shortened, and the damage to surrounding tissues is reduced.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable minimally invasive dilation drainage kit.
Background
The current minimally invasive dilation drainage kit generally comprises a dilator, a tearable peeling sheath, a renal puncture guide wire, a percutaneous renal puncture guide needle and a renal fistula, is suitable for clinical percutaneous renal puncture, and has the use method as follows: positioning under B-ultrasonic, and puncturing with renal puncture needle; after urine flows out of the puncture needle, the renal puncture guide wire or the zebra guide wire is left, and the puncture needle is withdrawn; under the guidance of a guide wire, expanding soft tissue channels from a skin puncture point to a lesion area step by step from small to large by adopting expanding tubes of different types; after the kidney-removing sheath is expanded to a preset model, the tearable peeling sheath is kept, and a kidney-removing cavity channel is established; after the kidney operation is finished, the nephrostomy tube is kept, the tearable peeling sheath is pulled out, and the nephrostomy tube is sutured and fixed. The currently clinically selected expansion tubes are 7F-14F, the expansion tube is withdrawn after the expansion of each type of expansion tube is finished, the expansion tube is replaced by the next type of expansion tube to continue the expansion, the operation is complex, and the operation time is long.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a disposable minimally invasive dilation drainage kit.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a disposable minimally invasive dilation drainage kit comprises dilation tubes, wherein the dilation tubes comprise telescopic multistage dilation branch tubes and contraction tubes, the telescopic multistage dilation branch tubes are arranged in the contraction tubes, the telescopic multistage dilation branch tubes comprise a plurality of dilation branch tubes, the outer diameters of the dilation branch tubes are coaxially sleeved and arranged from small to large, and each dilation branch tube is in axial sliding fit with the dilation branch tube adjacent to the dilation branch tube; the telescopic adjusting mechanism comprises a rotating ring, the rotating ring is sleeved on the outer surface of the telescopic pipe and provided with internal threads, the rotating ring is connected with the telescopic pipe through threads, a rectangular opening is formed in the telescopic pipe and corresponds to the rotating ring, a clamping ring is arranged at the rectangular opening and is sleeved on the outer surface of the telescopic pipe corresponding to the rectangular opening, external threads corresponding to the internal threads on the rotating ring are arranged on the outer circumferential surface of the clamping ring, a clamping block extends along the inner circumferential direction of the clamping ring, and the clamping block is inserted into the pipe cavity of the telescopic pipe; the tail end of each expansion branch pipe forms a convex part along the outer circumferential direction of the expansion branch pipe, the inner surfaces of each expansion branch pipe and the contraction pipe are respectively provided with a sliding groove, the convex part of each expansion branch pipe is embedded into the sliding groove of the adjacent expansion branch pipe or contraction pipe, and a spring is arranged between the convex part and the bottom surface of the sliding groove so that the convex part of each expansion branch pipe axially slides along the sliding groove; the bulge part of the expansion branch pipe with the smallest outer diameter is also fixedly connected with a rigid traction wire, and the rigid traction wire is fixedly connected with a clamping block on the contraction pipe.
According to the size of external diameter, in embedding the bellying of expansion branch pipe rather than the adjacent expansion branch pipe's sliding tray in proper order, can realize the connection of the expansion branch pipe of different external diameters, the combination obtains the multistage scalable multistage expansion branch pipe that has different external diameters, and the bellying embedding of the expansion branch pipe of further maximum external diameter and the sliding tray of shrink pipe are in again for the expansion branch pipe of the external diameter is the biggest is connected between with the shrink pipe.
The puncture part is expanded along the guide wire by utilizing the expansion branch pipe with the smallest outer diameter, the puncture part is expanded by adopting the expansion branch pipe with the smallest outer diameter, the rigid traction wire is pulled by rotating the rotating ring after the expansion branch pipe with the smallest outer diameter is driven to contract into the next expansion branch pipe, the puncture part is expanded by the next expansion branch pipe, and the like in sequence, finally the expansion branch pipe with the largest outer diameter is contracted into the contraction pipe, the puncture part is expanded by the contraction pipe, the in-situ multi-stage expansion can be realized, the expansion branch pipe does not need to be withdrawn after the expansion of each model expansion pipe is finished in the whole process, the expansion branch pipe is continuously expanded by replacing the next model expansion pipe, the operation time is favorably shortened, and the damage to surrounding tissues is reduced.
Preferably, the elastic coefficient of the spring on the expansion branch pipe or the contraction pipe is sequentially increased from small to large according to the outer diameter of the pipe body, and under the condition of the same stress, the rigid traction wire is pulled, and the expansion branch pipe is retracted into the contraction pipe from small to large according to the outer diameter of the expansion branch pipe.
Preferably, the front end of each of the expanding and contracting tubes is conical.
Preferably, the taper of the leading end of each of the expanded branch and the contracted tube is 5 ° to 15 °, more preferably 5 ° to 12 °. The front ends of the expansion branch pipe and the contraction pipe are designed to be conical, and the conical degree is optimized, so that the expansion branch pipe and the contraction pipe can be conveniently conveyed to a puncture site in an operation.
Preferably, the length of the pipe body of each expansion branch pipe is sequentially reduced from small to large according to the outer diameter of the pipe body, so that each expansion pipe can be contracted into the expansion branch pipe of the next stage, and similarly, the length of the pipe body of the expansion branch pipe with the largest outer diameter is smaller than that of the contraction pipe.
Preferably, the telescopic multi-stage expansion branch pipe is a 2-3 stage expansion branch pipe.
Preferably, the outer side of the contraction tube is sleeved with a tearable sheath tube, and after the contraction tube is expanded to a preset model, the tearable peeling sheath is kept in place to establish a renal cavity removing channel.
Preferably, the center of each expanding branch pipe and the center of each contracting pipe are provided with guide wire channels which penetrate along the axial direction.
Preferably, each of the expanding branch pipe and the contracting pipe is provided with scales along the axial direction.
Compared with the prior art, the invention has the beneficial effects that:
the expansion tube can realize in-situ multi-stage expansion of the punctured part, and in the whole process, the expansion tube is not required to be withdrawn after the expansion of each model of expansion tube is finished, and the expansion tube is replaced by the next model of expansion tube to continue the expansion, thereby being beneficial to shortening the operation time and reducing the damage to the surrounding tissues.
Drawings
FIG. 1 is a schematic structural view of an expanding tube according to example 1;
FIG. 2 is a schematic structural view of the stent of example 2;
FIG. 3 is a schematic structural diagram of a snap ring of the present invention;
in the figure, 1-contracted pipe, 2-first expanded branched pipe, 3-second expanded branched pipe, 4-rotating ring, 5-rectangular opening, 6-snap ring, 7-snap block, 8-first convex part, 9-second convex part, 10-first sliding groove, 11-second sliding groove, 12-sliding groove A, 13-first spring, 14-spring A, 15-second spring, 16-rigid traction wire, 17-third expanded branched pipe, 18-third convex part, 19-third sliding groove, and 20-third spring.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. It will be understood by those skilled in the art that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the examples, the experimental methods used were all conventional methods unless otherwise specified, and the materials, reagents and the like used were commercially available without otherwise specified.
A disposable minimally invasive dilation drainage kit comprises dilation tubes, wherein the dilation tubes comprise telescopic multistage dilation branch tubes and contraction tubes, the telescopic multistage dilation branch tubes are arranged in the contraction tubes, the telescopic multistage dilation branch tubes comprise a plurality of dilation branch tubes, the outer diameters of the dilation branch tubes are coaxially sleeved and arranged from small to large, and each dilation branch tube is in axial sliding fit with the dilation branch tube adjacent to the dilation branch tube; the telescopic adjusting mechanism comprises a rotating ring, the rotating ring is sleeved on the outer surface of the telescopic pipe and provided with internal threads, the rotating ring is connected with the telescopic pipe through threads, a rectangular opening is formed in the telescopic pipe and corresponds to the rotating ring, a clamping ring is arranged at the rectangular opening and is sleeved on the outer surface of the telescopic pipe corresponding to the rectangular opening, external threads corresponding to the internal threads on the rotating ring are arranged on the outer circumferential surface of the clamping ring, a clamping block extends along the inner circumferential direction of the clamping ring, and the clamping block is inserted into the pipe cavity of the telescopic pipe; the tail end of each expansion branch pipe forms a convex part along the outer circumferential direction of the expansion branch pipe, the inner surfaces of each expansion branch pipe and the contraction pipe are respectively provided with a sliding groove, the convex part of each expansion branch pipe is embedded into the sliding groove of the adjacent expansion branch pipe or contraction pipe, and a spring is arranged between the convex part and the bottom surface of the sliding groove so that the convex part of each expansion branch pipe axially slides along the sliding groove; the bulge part of the expansion branch pipe with the smallest outer diameter is also fixedly connected with a rigid traction wire, and the rigid traction wire is fixedly connected with a clamping block on the contraction pipe.
According to the size of external diameter, in embedding the bellying of expansion branch pipe rather than the adjacent expansion branch pipe's sliding tray in proper order, can realize the connection of the expansion branch pipe of different external diameters, the combination obtains the multistage scalable multistage expansion branch pipe that has different external diameters, and the bellying embedding of the expansion branch pipe of further maximum external diameter and the sliding tray of shrink pipe are in again for the expansion branch pipe of the external diameter is the biggest is connected between with the shrink pipe.
The puncture part is expanded along the guide wire by utilizing the expansion branch pipe with the smallest outer diameter, the puncture part is expanded by adopting the expansion branch pipe with the smallest outer diameter, the rigid traction wire is pulled by rotating the rotating ring after the expansion branch pipe with the smallest outer diameter is driven to contract into the next expansion branch pipe, the puncture part is expanded by the next expansion branch pipe, and the like in sequence, finally the expansion branch pipe with the largest outer diameter is contracted into the contraction pipe, the puncture part is expanded by the contraction pipe, the in-situ multi-stage expansion can be realized, the expansion branch pipe does not need to be withdrawn after the expansion of each model expansion pipe is finished in the whole process, the expansion branch pipe is continuously expanded by replacing the next model expansion pipe, the operation time is favorably shortened, and the damage to surrounding tissues is reduced.
In the invention, the elastic coefficient of the spring on the expansion branch pipe or the contraction pipe is sequentially increased according to the sequence from small to large of the outer diameter of the pipe body, and under the condition of the same stress, the rigid traction wire is pulled, and the expansion branch pipe is retracted into the contraction pipe according to the sequence from small to large of the outer diameter of the expansion branch pipe.
In the present invention, the front end of each of the expanding branch tube and the contracting tube is conical.
Preferably, the taper of the leading end of each of the expanded branch and the contracted tube is 5 ° to 15 °, more preferably 5 ° to 12 °. The front ends of the expansion branch pipe and the contraction pipe are designed to be conical, and the conical degree is optimized, so that the expansion branch pipe and the contraction pipe can be conveniently conveyed to a puncture site in an operation.
In the invention, the length of the pipe body of each expansion branch pipe is reduced in turn according to the external diameter of the pipe body from small to large.
In the invention, the telescopic multistage expansion branch pipe is a 2-3 stage expansion branch pipe.
In the invention, the outer side of the contraction tube is sleeved with the tearable sheath tube, and after the contraction tube is expanded to a preset model, the tearable peeling sheath is kept in place to establish a renal cavity removing channel.
In the invention, the center of each expansion branch pipe and the center of each contraction pipe are provided with guide wire channels which are communicated along the axial direction.
In the invention, each expansion branch pipe and each contraction pipe are provided with scales along the axial direction.
In the invention, the outer surfaces of each expansion branch pipe and each contraction pipe are coated with hydrophilic materials, so that the smoothness of the pipes is improved, and the damage to human bodies when the pipes pass through is reduced.
In the invention, the minimally invasive dilation drainage kit further comprises a tearable sheath, a puncture needle, a zebra guide wire and a nephrostomy tube.
Example 1
A disposable minimally invasive dilation drainage kit, as shown in figures 1 and 3, comprises a dilation tube, wherein the dilation tube comprises a telescopic multi-stage dilation tube and a contraction tube 1, and the telescopic multi-stage dilation tube is arranged in the contraction tube 1; the telescopic multi-stage expansion branch pipe is a 2-stage expansion branch pipe and comprises a first expansion branch pipe 2 and a second expansion branch pipe 3, the second expansion branch pipe 3 is arranged in the first expansion branch pipe 2, the outer diameter of the second expansion branch pipe 3 is equal to the inner diameter of the first expansion branch pipe 2, and the second expansion branch pipe 3 is in axial sliding fit with the first expansion branch pipe 2; the first expansion branch pipe 2 is arranged in the contraction pipe 1, the outer diameter of the first expansion branch pipe 2 is equal to the inner diameter of the contraction pipe 1, and the first expansion branch pipe 2 is in axial sliding fit with the contraction pipe 1; a telescopic adjusting mechanism is arranged at the tail end of the contraction pipe 2, the telescopic adjusting mechanism comprises a rotating ring 4, the rotating ring 4 is sleeved on the outer surface of the contraction pipe 1, the rotating ring 4 is provided with internal threads, the rotating ring 4 is connected with the contraction pipe 1 through threads, a rectangular opening 5 is further arranged on the contraction pipe 1 corresponding to the rotating ring 4, a clamping ring 6 is arranged at the rectangular opening 5, the clamping ring 6 is sleeved on the outer surface of the contraction pipe 1 corresponding to the rectangular opening 5, external threads corresponding to the internal threads on the rotating ring 4 are arranged on the outer circumferential surface of the clamping ring 6, a clamping block 7 extends from the clamping ring 6 along the inner circumferential direction of the clamping ring, and the clamping block 7 is inserted into the; the tail end of the first expansion branch pipe 2 forms a first convex part 8 along the outer circumferential direction, the tail end of the second expansion branch pipe 3 forms a second convex part 9 along the outer circumferential direction, the inner surfaces of the first expansion branch pipes 1 are provided with first sliding grooves 10, the inner surfaces of the second expansion branch pipes 3 are provided with second sliding grooves 11, the inner surfaces of the contraction pipes 1 are provided with sliding grooves A12, the second convex parts 9 are embedded into the first sliding grooves 10, and a first spring 13 is arranged between the second convex parts 9 and the bottom surfaces of the first sliding grooves 10, so that the second expansion branch pipes 3 can axially slide along the first sliding grooves 10; the first bulge part 8 is embedded into the sliding groove A12, a spring A14 is arranged between the first bulge part 8 and the bottom surface of the sliding groove A12, so that the first expansion branch pipe 2 can axially slide along the sliding groove A12, and a second spring 15 is arranged in the second sliding groove 11, wherein the elastic coefficient of the second spring 15 is less than that of the first spring 13 and less than that of the spring A14; the second bulge part 9 of the second expansion branch pipe 3 is also fixedly connected with a rigid traction wire 16, and the rigid traction wire 16 is fixedly connected with a clamping block 7 on the contraction pipe 1; the length of the second expansion branch pipe 3 is less than that of the first expansion branch pipe 2 is less than that of the contraction pipe 1; the front ends of the second expansion branch pipe 3, the first expansion branch pipe 2 and the contraction pipe 1 are conical, the taper of the front end of the second expansion branch pipe 3 is 5 degrees, the taper of the front end of the first expansion branch pipe 2 is 8 degrees, and the taper of the front end of the contraction pipe 1 is 12 degrees.
The outside of the contraction tube of this embodiment is cup jointed with can tear sheath pipe, wicresoft expands drainage external member still includes pjncture needle, zebra guide wire and kidney fistulization pipe.
The use method of the minimally invasive dilation drainage kit comprises the following steps:
positioning under B-ultrasonic, and puncturing with a puncture needle; after urine flows out of the puncture needle, a zebra guide wire is reserved, and the puncture needle is withdrawn; under the guide of a guide wire, the expansion tube is in an extended state from a skin puncture point to a soft tissue channel of a lesion area, firstly, a second expansion branch tube with the smallest outer diameter is adopted for pre-expansion, after the pre-expansion is finished, a rotating ring is rotated to drive a clamping ring and a clamping block to move towards the tail end of a contraction tube along a rectangular opening, so that a rigid traction wire pulls the second expansion branch tube to contract into a first expansion branch tube, the second expansion branch tube is prevented from stabbing tissues, then, the expansion is carried out through the first expansion branch tube, after the expansion is finished, the rotating ring is continuously rotated to drive the clamping ring and the clamping block to move towards the tail end of the contraction tube along the rectangular opening, so that the rigid traction wire pulls the first expansion branch tube and the second expansion branch tube to contract into the contraction tube, finally, the expansion is carried out through the contraction tube, a retention and tearing sheath can be peeled; after the kidney operation is finished, the nephrostomy tube is kept, the tearable peeling sheath is pulled out, and the nephrostomy tube is sutured and fixed.
Example 2
A disposable minimally invasive dilation drainage kit, as shown in figures 2-3, comprises a dilation tube, wherein the dilation tube comprises a telescopic multi-stage dilation tube and a contraction tube 1, and the telescopic multi-stage dilation tube is arranged in the contraction tube 1; the telescopic multi-stage expansion branch pipe is a 3-stage expansion branch pipe and comprises a first expansion branch pipe 2, a second expansion branch pipe 3 and a third expansion branch pipe 17, the third expansion branch pipe 17 is arranged in the second expansion branch pipe 3, the outer diameter of the third expansion branch pipe 17 is equal to the inner diameter of the second expansion branch pipe 3, the second expansion branch pipe 3 is arranged in the first expansion branch pipe 2, the outer diameter of the second expansion branch pipe 3 is equal to the inner diameter of the first expansion branch pipe 2, and the second expansion branch pipe 3 is in axial sliding fit with the first expansion branch pipe 2; the first expansion branch pipe 2 is arranged in the contraction pipe, the outer diameter of the first expansion branch pipe 2 is equal to the inner diameter of the contraction pipe 1, and the first expansion branch pipe 2 is in axial sliding fit with the contraction pipe 1; a telescopic adjusting mechanism is arranged at the tail end, close to the tail end, of the shrinkage pipe 1, the telescopic adjusting mechanism comprises a rotating ring 4, the rotating ring 4 is sleeved on the outer surface of the shrinkage pipe 1, the rotating ring 4 is provided with internal threads, the rotating ring 4 is connected with the shrinkage pipe 1 through threads, a rectangular opening 5 is further formed in the shrinkage pipe 1 corresponding to the rotating ring 4, a clamping ring 6 is arranged at the rectangular opening 5, the clamping ring 6 is sleeved on the outer surface of the shrinkage pipe 1 corresponding to the rectangular opening 5, external threads corresponding to the internal threads in the rotating ring 4 are formed in the outer circumferential surface of the clamping ring 6, a clamping block 7 extends from the clamping ring 6 along the inner circumferential direction of the clamping ring, and the; the distal end of the first expanded branch tube 2 is formed with a first boss 8 in the outer circumferential direction thereof, the distal end of the second expanded branch tube 3 is formed with a second boss 9 in the outer circumferential direction thereof, and the distal end of the third expanded branch tube 17 is formed with a third boss 18 in the outer circumferential direction thereof; the inner surfaces of the first expansion branch pipes 2 are provided with first sliding grooves 10, the inner surfaces of the second expansion branch pipes 3 are provided with second sliding grooves 11, the inner surfaces of the third expansion branch pipes 17 are provided with third sliding grooves 19, and the inner surfaces of the contraction pipes 1 are provided with sliding grooves A14; the third bulge 18 is embedded into the second sliding groove 11, and a second spring 15 is arranged between the third bulge 18 and the bottom surface of the second sliding groove 11, so that the third expansion branch pipe 17 can axially slide along the second sliding groove 11; the second bulge part 9 is embedded into the first sliding groove 10, and the bottom surfaces of the second bulge part 9 and the first sliding groove 10 are provided with a first spring 13, so that the second expansion branch pipe 3 can axially slide along the first sliding groove 10; the first bulge part 8 is embedded into the sliding groove A14, and a spring A12 is arranged between the first bulge part 8 and the bottom surface of the sliding groove A14, so that the first expansion branch pipe 2 can slide along the axial direction of the sliding groove A12; a third spring 20 is arranged in the third sliding groove 19, wherein the elastic coefficient of the third spring 20 < the elastic coefficient of the second spring 15 < the elastic coefficient of the first spring 13 < the elastic coefficient of the spring a 14; the third bulge 18 of the third expansion branched pipe 17 is also fixedly connected with a rigid traction wire 16, and the rigid traction wire 16 is fixedly connected with the fixture block 7 on the contraction pipe 1; the length of the third expansion branch pipe 17 is less than that of the second expansion branch pipe 3 is less than that of the first expansion branch pipe 2 is less than that of the contraction pipe 1; the front ends of the third expansion branch pipe 17, the second expansion branch pipe 3, the first expansion branch pipe 2 and the contraction pipe 1 are conical, the taper of the front end of the third expansion branch pipe 17 is 5 degrees, the taper of the front end of the second expansion branch pipe 3 is 8 degrees, the taper of the front end of the first expansion branch pipe 2 is 10 degrees, the taper of the front end of the contraction pipe 1 is 12 degrees, and the outer side of the contraction pipe is sleeved with a tearable sheath pipe.
The outside of the contraction tube of this embodiment is cup jointed with can tear sheath pipe, wicresoft expands drainage external member still includes pjncture needle, zebra guide wire and kidney fistulization pipe.
The use method of the minimally invasive dilation drainage kit comprises the following steps:
positioning under B-ultrasonic, and puncturing with a puncture needle; after urine flows out of the puncture needle, a zebra guide wire is reserved, and the puncture needle is withdrawn; under the guide of a guide wire, the expansion tube is in an extended state from a skin puncture point to a soft tissue channel of a lesion area, firstly, a third expansion branch tube with the smallest outer diameter is adopted for pre-expansion, after the pre-expansion is finished, a rotating ring is rotated to drive a clamping ring and a clamping block to move towards the tail end of a contraction tube along a rectangular opening, so that a rigid traction wire pulls the third expansion branch tube to contract into the second expansion branch tube, then, the second expansion branch tube is adopted for pre-expansion, after the pre-expansion is finished, the rotating ring is rotated to drive the clamping ring and the clamping block to move towards the tail end of the contraction tube along the rectangular opening, and the rigid traction wire pulls the third expansion branch tube and the second expansion branch tube to contract into the first expansion branch tube; continuously expanding the first expanding branch pipe, continuously rotating the rotating ring after the expansion is finished, driving the clamping ring and the clamping block to move to the tail end of the contraction pipe along the rectangular opening, enabling the rigid traction wire to pull the first expanding branch pipe, the second expanding branch pipe and the third expanding branch pipe to be contracted into the contraction pipe, finally expanding the contraction pipe, and after the expansion is finished, remaining the tearable peeling sheath to establish a renal cavity removing channel; after the kidney operation is finished, the nephrostomy tube is kept, the tearable peeling sheath is pulled out, and the nephrostomy tube is sutured and fixed.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. A disposable minimally invasive dilation drainage kit is characterized by comprising dilation tubes, wherein the dilation tubes comprise telescopic multi-stage dilation branch tubes and contraction tubes, the telescopic multi-stage dilation branch tubes are arranged in the contraction tubes, the telescopic multi-stage dilation branch tubes comprise a plurality of dilation branch tubes, the outer diameters of the dilation branch tubes are coaxially sleeved and arranged from small to large, and each dilation branch tube is in axial sliding fit with the dilation branch tube adjacent to the dilation branch tube; the telescopic adjusting mechanism comprises a rotating ring, the rotating ring is sleeved on the outer surface of the telescopic pipe and provided with internal threads, the rotating ring is connected with the telescopic pipe through threads, a rectangular opening is formed in the telescopic pipe and corresponds to the rotating ring, a clamping ring is arranged at the rectangular opening and is sleeved on the outer surface of the telescopic pipe corresponding to the rectangular opening, external threads corresponding to the internal threads on the rotating ring are arranged on the outer circumferential surface of the clamping ring, a clamping block extends along the inner circumferential direction of the clamping ring, and the clamping block is inserted into the pipe cavity of the telescopic pipe; the tail end of each expansion branch pipe forms a convex part along the outer circumferential direction of the expansion branch pipe, the inner surfaces of each expansion branch pipe and the contraction pipe are respectively provided with a sliding groove, the convex part of each expansion branch pipe is embedded into the sliding groove of the adjacent expansion branch pipe or contraction pipe, and a spring is arranged between the convex part and the bottom surface of the sliding groove so that the convex part of each expansion branch pipe axially slides along the sliding groove; the bulge part of the expansion branch pipe with the smallest outer diameter is also fixedly connected with a rigid traction wire, and the rigid traction wire is fixedly connected with a clamping block on the contraction pipe.
2. The disposable minimally invasive dilation drainage kit according to claim 1, wherein the elastic coefficients of the springs on the dilation branched tube or the contraction branched tube are sequentially increased from smaller to larger according to the outer diameters of the tube bodies.
3. The single use minimally invasive dilation drainage kit of claim 1, wherein the forward end of each dilation minute tube and constriction tube is conical.
4. The disposable minimally invasive dilation drainage kit of claim 3, wherein the taper of the front end of each dilation hypotube and the constriction tube is 5 ° to 15 °.
5. The disposable minimally invasive dilation drainage kit of claim 4, wherein the taper of the front end of each dilation hypotube and the constriction tube is 5 ° to 12 °.
6. The disposable minimally invasive dilation drainage kit according to claim 1, wherein the length of the tube body of each dilation tube is sequentially increased according to the outer diameter of the tube body from small to large.
7. The disposable minimally invasive dilation drainage kit of claim 1, wherein the telescoping multi-stage dilation tube is a 2-3 stage dilation tube.
8. The single use minimally invasive dilation drainage kit of claim 1, wherein a tearable sheath is sleeved outside the shrink tube.
9. The disposable minimally invasive dilation drainage kit according to claim 1, wherein each dilation minute tube and the contraction tube is provided with a guide wire channel at the center thereof, and the guide wire channel penetrates through the dilation minute tube and the contraction tube along the axial direction.
10. The disposable minimally invasive dilation drainage kit according to any one of claims 1 to 9, wherein each of the dilation hypotube and the constriction tube is axially graduated.
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| CN201910990866.4A CN110720969B (en) | 2019-10-17 | 2019-10-17 | Disposable minimally invasive dilation drainage kit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111658084A (en) * | 2020-05-28 | 2020-09-15 | 东莞科威医疗器械有限公司 | Puncture dilator |
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