CN111921070B - Combined structure of sheath-entering expansion tube and ureteral sheath - Google Patents
Combined structure of sheath-entering expansion tube and ureteral sheath Download PDFInfo
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- CN111921070B CN111921070B CN202010899846.9A CN202010899846A CN111921070B CN 111921070 B CN111921070 B CN 111921070B CN 202010899846 A CN202010899846 A CN 202010899846A CN 111921070 B CN111921070 B CN 111921070B
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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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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/24—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter
- A61B18/245—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor with a catheter for removing obstructions in blood vessels or calculi
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
- A61B18/20—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser
- A61B18/22—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor
- A61B18/26—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using laser the beam being directed along or through a flexible conduit, e.g. an optical fibre; Couplings or hand-pieces therefor for producing a shock wave, e.g. laser lithotripsy
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0194—Tunnelling catheters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00982—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body combined with or comprising means for visual or photographic inspections inside the body, e.g. endoscopes
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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
- A61M25/00—Catheters; Hollow probes
- A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
- A61M25/0194—Tunnelling catheters
- A61M2025/0197—Tunnelling catheters for creating an artificial passage within the body, e.g. in order to go around occlusions
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Abstract
The invention discloses a combined structure of a sheath-entering expansion pipe and a ureteral sheath, which comprises a pipe sheath and an expansion pipe coaxially inserted into the pipe sheath, wherein one end of the expansion pipe is coaxially fixed in an expansion pipe handle, a guide wire channel is arranged in the expansion pipe along the axial direction of the expansion pipe, a guide structure which can be mutually matched for coaxially guiding the expansion pipe into the pipe sheath is arranged on the expansion pipe and the pipe sheath, and the guide structure comprises a guide boss arranged on the outer side of the expansion pipe and a guide pipe sheath section which is matched with the guide boss, arranged along the axial direction parallel to the pipe sheath and can be used as a negative-pressure calculus removing channel. The ureteral sheath is designed into a special-shaped sheath structure consisting of a large arc-shaped sheath section and a small arc-shaped sheath section, the expansion tube can be guided by matching the small arc-shaped sheath section with the guide boss, an endoscope penetrates into an image channel in the sheath arranging process of the expansion tube, water injection is performed to keep the visual field clear, and the ureteral sheath can be used as a surgical instrument after the sheath is fed and is matched with a ureteroscope catheter to perform stone breaking and removing operations.
Description
Technical Field
The invention relates to the technical field of urological operation equipment, in particular to a combined structure of a sheath entering expansion pipe and a ureteral sheath.
Background
In the ureter soft lens operation, the ureter soft endoscope can enter the body through the urethra to observe the lesion position and can be matched with a surgical instrument to perform visual operation treatment in the body. Clinical in vivo examination and visual surgical treatment require a sharp image endoscope to help the doctor improve the accuracy of diagnosis. In the existing ureteroscope operation, a sheath-entering expansion pipe is matched with a ureteral sheath to carry out sheath-feeding operation, then a ureteroscope catheter is inserted into the ureteral sheath to treat an affected part, in the broken calculus-removing operation process of urinary surgery, broken calculus which is hit by holmium laser needs to be discharged out of a body through the ureteral sheath, at the moment, the ureteroscope catheter needs to be withdrawn for operation, but the discharge condition of the broken calculus-removing is incapable of being observed due to withdrawing the ureteroscope catheter, so that the broken calculus-removing cannot be completely discharged out of the body at one time, in order to guarantee the operation effect, the ureteroscope catheter needs to be inserted for observation or treatment for many times, the repeated operation of inserting the ureteroscope catheter increases the pain of a patient, and simultaneously, the injury of human organs is easy to cause.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a combined structure of a sheath entering expansion pipe and a ureteral sheath, which is easy to discharge broken stones out of a human body and has a large-diameter stone discharge channel.
In order to achieve the purpose, the combined structure of the sheath entering expansion tube and the ureteral sheath comprises a tube sheath and an expansion tube coaxially inserted into the tube sheath, wherein one end of the expansion tube is coaxially fixed in a handle of the expansion tube, and a guide wire channel is arranged in the expansion tube along the axial direction of the expansion tube, and is characterized in that: the expansion pipe with be provided with on the tube sheath and mutually support will the coaxial leading-in of expansion pipe guide structure in the tube sheath, guide structure including set up in the direction boss (direction boss can be integrative with the expansion pipe, also can set up the direction boss into solitary part, with the expansion pipe assembly as an organic whole) of expansion pipe outside and with the cooperation of direction boss, along being on a parallel with the tube sheath axial direction sets up, can regard as the guide tube sheath section of stone discharge drainage passageway.
Further, the tube sheath comprises a large arc tube sheath section and a small arc tube sheath section, wherein the large arc tube sheath section is in coaxial clearance fit with the expansion tube, the small arc tube sheath section is fixedly connected to the left side end face and the right side end face of the large arc tube sheath section, the axial direction of the small arc tube sheath section is parallel to the axial direction of the large arc tube sheath section, and the guide tube sheath sections are the small arc tube sheath sections (a plurality of the small arc tube sheath sections can be provided).
Furthermore, an expansion pipe image lighting device channel is formed in the expansion pipe along the axial direction of the expansion pipe, and an expansion pipe image lighting device joint communicated with the expansion pipe image lighting device channel is arranged on the expansion pipe handle.
Furthermore, a water injection channel is formed in the expansion pipe along the axial direction of the expansion pipe, and a water injection joint communicated with the water injection channel is arranged on the handle of the expansion pipe.
Furthermore, one end of the sheath is coaxially fixed in the sheath handle, the expansion pipe is coaxially inserted into the sheath handle and the sheath, and the sheath handle and the expansion pipe handle are axially and fixedly connected through a detachable fixing structure.
Furthermore, the detachable fixing structure comprises a buckle fixing seat arranged at the top of the sheath handle and an expansion pipe buckle fixedly connected to the expansion pipe handle and matched with the buckle fixing seat.
Furthermore, the sheath handle is located in front of the expansion pipe handle, the rear end of the sheath handle is a hemispherical fixing seat, the buckle fixing seat is arranged at the top of the hemispherical fixing seat, and the front end of the expansion pipe handle is a frustum located in the hemispherical fixing seat.
Furthermore, a stone discharge and liquid discharge joint communicated with the tube sheath is arranged on the side part of the tube sheath handle.
The invention has the beneficial effects that: the ureteral sheath is designed into a special-shaped sheath structure consisting of a large circular arc sheath section and a small circular arc sheath section, the expansion tube can be guided by matching the small circular arc sheath section with the guide boss, an endoscope penetrates into an image channel in the sheath arranging process of the expansion tube, the visual field is kept clear by water injection, the ureteral sheath can be used as a surgical instrument after the sheath is fed, a ureteroscope catheter is matched for stone removal operation, fine crushed stones can be discharged along with return water through the small circular arc sheath section of the special-shaped sheath tube, and the crushed stone discharging efficiency is improved.
Drawings
FIG. 1 is a perspective view of the combination structure of the sheath-entering dilating tube and the ureteral sheath of the present invention;
FIG. 2 is a top view of the sheath advancing dilatation tube and ureteral sheath assembly of the present invention;
FIG. 3 is a front view of the sheath advancing dilatation tube and ureteral sheath assembly of the present invention;
FIG. 4 is a cross-sectional view E-E of FIG. 3;
FIG. 5 is a left side view of the combination structure of the sheath advancing dilatation tube and the ureteral sheath of the present invention;
FIG. 6 is a cross-sectional view F-F of FIG. 5;
FIG. 7 is a perspective view of the sheath access dilation tube of the present invention;
FIG. 8 is a top view of the entry sheath dilation tube of the present invention;
FIG. 9 is a front view of the sheath access dilation tube of the present invention;
FIG. 10 is a cross-sectional view C-C of FIG. 9;
FIG. 11 is a left side view of the sheath access dilation tube of the present invention;
FIG. 12 is a cross-sectional view taken along line D-D of FIG. 11;
FIG. 13 is a perspective view of a ureteral sheath of the present invention;
FIG. 14 is a top view of a ureteral sheath of the present invention;
FIG. 15 is a front view of the ureteral sheath of the present invention;
FIG. 16 is a cross-sectional view A-A of FIG. 15;
FIG. 17 is a left side view of the ureteral sheath of the present invention;
FIG. 18 is a cross-sectional view taken along line B-B of FIG. 17;
FIG. 19 is a perspective view of a ureteroscopy catheter of the present invention having a catheter cap;
FIG. 20 is a radial cross-sectional view of a catheter according to the present invention;
FIG. 21 is a perspective view of a side-flushable catheter cap of the present invention;
FIG. 22 is a top plan view of a side-flushable catheter cap of the present invention;
FIG. 23 is a sectional view taken along line G-G of FIG. 22;
FIG. 24 is a sectional view taken along line H-H of FIG. 22;
FIG. 25 is a perspective view of the combination of a ureteroscope catheter and a ureteral sheath according to the present invention;
FIG. 26 is a first axial cross-sectional view of a ureteroscope catheter and ureteral sheath of the present invention;
FIG. 27 is a second axial cross-sectional view of the ureteroscope catheter and ureteral sheath of the present invention;
101-a catheter handle, 102-a catheter, 103-a water inlet and instrument channel, 104-a water inlet and instrument connector, 105-a catheter image lighting device channel, 106-a catheter image lighting device connector, 107-a side water outlet channel, 108-a side water outlet channel connector, 109-a cylindrical sleeve section, 110-a solid cylindrical section, 111-an axial flushing channel, 112-a lateral flushing channel, 113-a catheter cap image channel, 114-a catheter cap side water outlet, 115-a catheter handle buckle;
201-tube sheath (201.1-large arc tube sheath section, 201.2-small arc tube sheath section), 202-stone discharge and drainage joint, 203-tube sheath handle, 204-buckle fixing seat;
301-expansion tube, 302-expansion tube handle, 303-guide wire channel, 304-guide boss, 305-water injection channel, 306-water injection joint, 307-expansion tube handle buckle, 308-expansion tube image lighting device channel, 309-expansion tube image lighting device joint, 310-guide wire joint.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
The combination of the sheath-entering dilating tube and the ureteral sheath as shown in fig. 1 to 18 comprises a sheath 201 and a dilating tube 301 coaxially inserted into the sheath 201.
The tube sheath 201 comprises a large arc tube sheath section 201.1 which is in coaxial clearance fit with the expansion tube 301 and a small arc tube sheath section 201.2 which is fixedly connected to the left and right side end faces of the large arc tube sheath section 201.1 and is axially parallel to the large arc tube sheath section 201.1, one end of the tube sheath 201 is coaxially fixed in the tube sheath handle 203, and the side part of the tube sheath handle 203 is provided with a stone discharge joint 202 communicated with the tube sheath 201.
One end of the expansion pipe 301 is coaxially fixed in an expansion pipe handle 302, a guide wire channel 303, an expansion pipe image lighting device channel 308 and a water injection channel 305 are arranged in the expansion pipe 301 along the axial direction of the expansion pipe 301, an expansion pipe image lighting device joint 309 communicated with the expansion pipe image lighting device channel 308, a guide wire joint 310 communicated with the guide wire channel and a water injection joint 306 communicated with the water injection channel 305 are arranged on the expansion pipe handle 302, and a guide boss 304 is coaxially fixed on the expansion pipe 301.
The small arc tube sheath section 201.2 is matched with the guide boss 304 to coaxially guide the expansion tube 301 into the tube sheath 201, and meanwhile, the small arc tube sheath section 201.2 can also be used as a stone discharge and liquid discharge channel during a stone crushing and discharging operation.
The sheath handle 203 and the expansion tube handle 302 are axially and fixedly connected through a detachable fixing structure: comprises a buckle fixing seat 204 arranged at the top of the sheath handle 203 and an expansion pipe buckle 307 which is fixedly connected to the expansion pipe handle 302 and is matched with the buckle fixing seat 204.
As shown in fig. 1 to 27, in the ureteroscope operation, three components, namely, an expansion tube 301, a tube sheath 201 and the ureteroscope catheter (which is an integral fixed structure with a catheter cap) designed by the invention are required. The expansion tube 301 and the tube sheath 201 are fixed to form an upper sheath assembly, and the ureteroscope catheter and the tube sheath 201 are fixed to form a ureteral operation assembly.
The structure of the upper sheath assembly comprises a tube sheath 201 and an expansion tube 301 which is coaxially inserted into the tube sheath 201. The tube sheath 201 comprises a large arc tube sheath section 201.1 which is in coaxial clearance fit with the expansion tube 301 and a small arc tube sheath section 201.2 which is fixedly connected to the left and right side end faces of the large arc tube sheath section 201.1 and is axially parallel to the large arc tube sheath section 201.1, one end of the tube sheath 201 is coaxially fixed in the tube sheath handle 203, and the side part of the tube sheath handle 203 is provided with a stone discharge joint 202 communicated with the tube sheath 201. One end of the expansion pipe 301 is coaxially fixed in an expansion pipe handle 302, a guide wire channel 303, an expansion pipe image lighting device channel 308 and a water injection channel 305 are arranged in the expansion pipe 301 along the axial direction of the expansion pipe 301, an expansion pipe image lighting device joint 309 communicated with the expansion pipe image lighting device channel 308, a guide wire joint 310 communicated with the guide wire channel and a water injection joint 306 communicated with the water injection channel 305 are arranged on the expansion pipe handle 302, and a guide boss 304 is coaxially fixed on the expansion pipe 301. The small arc sheath section 201.2 and the guide boss 304 are matched to coaxially guide the expansion tube 301 into the sheath 201. The sheath handle 203 and the expansion tube handle 302 are axially and fixedly connected through a detachable fixing structure: comprises a buckle fixing seat 204 arranged at the top of the sheath handle 203 and an expansion pipe buckle 307 which is fixedly connected to the expansion pipe handle 302 and is matched with the buckle fixing seat 204.
The ureteral surgical assembly includes a sheath 201 and a catheter 102 coaxially inserted within the sheath 201. One end of the sheath 201 is coaxially fixed in the sheath handle 203, the lateral part of the sheath handle 203 is connected with a stone discharge connector 202 communicated with the sheath 201, the catheter 102 is coaxially inserted into the sheath handle 203, the sheath 201 comprises a large arc sheath section 201.1 which is in coaxial clearance fit with the catheter 102 and a small arc sheath section 201.2 which is fixedly connected with the left and right side end faces of the large arc sheath section 201.1 and is axially parallel to the large arc sheath section 201.1 in the axial direction, and the small arc sheath section 201.2 is a water return channel and a stone discharge channel. One end of the catheter 102 is coaxially fixed in the catheter handle 101, a water inlet and instrument channel 103 and a catheter image lighting device channel 105 are arranged in the catheter 102 along the axial direction, and a water inlet and instrument joint 104 communicated with the water inlet and instrument channel 103 and a catheter image lighting device joint 106 communicated with the catheter image lighting device channel 105 are arranged on the catheter handle 101. A guide pipe cap is fixed at the other end of the guide pipe 102, the guide pipe cap comprises a cylindrical sleeve section 109 and a solid cylindrical section 110 coaxial with the cylindrical sleeve section 109, the guide structure comprises an axial flushing channel 111 arranged in the solid cylindrical section 110, a lateral flushing channel 112 is arranged between the axial flushing channel 111 and the outer wall of the solid cylindrical section 110, and an included angle between the axis of the axial flushing channel 111 and the axis of the lateral flushing channel 112 is an acute angle. A catheter cap image channel 113 coaxially communicated with the catheter image lighting device channel 105 is formed in the solid cylindrical section 110 along the axial direction thereof. The outer wall of the cylindrical sleeve section 109 is provided with a conduit cap side water outlet 114, the conduit 102 is internally provided with a side water outlet channel 107 communicated with the conduit cap side water outlet 114 along the axial direction, and the conduit handle 101 is provided with a side water outlet channel joint 108 communicated with the side water outlet channel 107. The sheath handle 203 and the catheter handle 101 are also fixedly connected axially through a detachable fixing structure: comprises a buckle fixing seat 204 arranged at the top of the sheath handle 203 and a catheter handle buckle 115 which is fixedly connected on the catheter handle 101 and is matched with the buckle fixing seat 204.
The using method of the invention is as follows: in ureteroscope operation, an expansion tube 301 and a tube sheath 201 are fixed into a whole through an expansion tube buckle 307 and a buckle fixing seat 204, an endoscope is inserted into an expansion tube image lighting device channel 308 of the expansion tube 301 through an expansion tube image lighting device connector 309 to form a visible ureter working sheath structure, then a guide wire is inserted into a guide wire channel 303, the combination of the expansion tube 301 and the tube sheath 201 is led into an operation position through the guide wire, the ureter can be observed in real time in the process of sheathing the combination of the expansion tube 301 and the tube sheath 201, water can be injected through a water injection connector 306 and a water injection channel 305 to flush the ureter when resistance occurs, the tube sheath 201 and the expansion tube 301 accurately reach the operation position by observing and adjusting the positions of the guide wire and the tube sheath 201 in real time, the connection between the expansion tube buckle 307 and the buckle fixing seat 204 is released, the expansion tube 301 is drawn out, and the catheter 101 is inserted into the tube sheath 201, the catheter handle 101 and the sheath handle 203 are fixed into a whole through the catheter handle buckle 115 and the buckle fixing seat 204, and then the conventional ureteral soft lens operation is carried out: when the endoscope is inserted into the catheter image lighting device channel 105 to observe the operation position, the surgical instrument (holmium laser) breaks stones in the renal pelvis and the renal calyx through the water inlet and instrument channel 103, water is injected to a stone point through the water inlet and instrument channel 103 and the side water outlet channel 107, the stone discharge and drainage joint 202 is connected with a negative pressure machine, when the endoscope observes the broken stones, the negative pressure machine is started, the broken stones are sucked out of the body through the small arc tube sheath section 201.1 (the broken stones and waste liquid can be discharged from the stone discharge and drainage joint 202 through a gap between the catheter 102 and the tube sheath 201 without being connected with a negative pressure suction apparatus).
The structure of the expanding tube 301 and the tube sheath 201 designed by the invention can enable the catheter 102 to accurately reach the operation position, and the ureteral operation is carried out by matching with a surgical instrument, the operation is convenient, the operation position is accurate, meanwhile, due to the specially designed structure of the expanding tube 301 and the shape of the tube sheath 201, after the expanding tube 301 is sheathed, the small arc tube sheath section 201.2 can be used as a negative pressure calculus removing channel (or used as a water injection channel to enable the crushed stone and waste liquid to be discharged from the small arc tube sheath section 201.2), the negative pressure suction and discharge of the calculus can be realized without withdrawing the catheter 102 from the tube sheath 201, meanwhile, the impact force of the crushed stone moving towards the suction and discharge direction is given by the lateral flushing channel 112, the crushed stone can be more easily separated from a calculus point, the flushing and discharge of the crushed stone are more thorough, the bleeding amount of a patient is reduced, the operation pain of the patient is reduced, and the operation efficiency and the success rate are improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the structure of the present invention in any way. Any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a composite construction of advancing sheath expansion tube and ureteral sheath, includes tube sheath (201) and coaxial insertion expand tube (301) in tube sheath (201), expand tube (301) one end is coaxial to be fixed in expand tube handle (302), along its axial in expand tube (301) seted up wire guide channel (303), its characterized in that: the expansion pipe (301) and the pipe sheath (201) are provided with guide structures which can be matched with each other to coaxially guide the expansion pipe (301) into the pipe sheath (201), and each guide structure comprises a guide boss (304) arranged on the outer side of the expansion pipe (301) and a guide pipe sheath section which is matched with the guide boss (304), arranged along the axial direction parallel to the pipe sheath (201) and can be used as a stone-discharging liquid-discharging channel;
the pipe sheath (201) comprises a large arc pipe sheath section (201.1) which is in coaxial clearance fit with the expansion pipe (301) and a small arc pipe sheath section (201.2) which is fixedly connected to the left and right side end faces of the large arc pipe sheath section (201.1), the axial direction of the small arc pipe sheath section is parallel to the axial direction of the large arc pipe sheath section (201.1), and the guide pipe sheath section is the small arc pipe sheath section (201.2).
2. The combination sheath dilation tube and ureteral sheath of claim 1, wherein: an expansion pipe image lighting device channel (308) is formed in the expansion pipe (301) along the axial direction of the expansion pipe, and an expansion pipe image lighting device joint (309) communicated with the expansion pipe image lighting device channel (308) is arranged on the expansion pipe handle (302).
3. The combination sheath dilation tube and ureteral sheath of claim 2, wherein: a water injection channel (305) is formed in the expansion pipe (301) along the axial direction of the expansion pipe, and a water injection joint (306) communicated with the water injection channel (305) is arranged on the expansion pipe handle (302).
4. The combination sheath dilation tube and ureteral sheath of claim 1, wherein: one end of the tube sheath (201) is coaxially fixed in the tube sheath handle (203), the expansion tube (301) is coaxially inserted into the tube sheath handle (203), and the tube sheath handle (203) is axially and fixedly connected with the expansion tube handle (302) through a detachable fixing structure.
5. The combination sheath dilation tube and ureteral sheath of claim 4, wherein: the detachable fixing structure comprises a buckle fixing seat (204) arranged at the rear part of the sheath handle (203) and an expansion pipe buckle (307) fixedly connected to the expansion pipe handle (302) and matched with the buckle fixing seat (204).
6. The combination sheath dilation tube and ureteral sheath of claim 5, wherein: the pipe sheath handle (203) is located in front of the expansion pipe handle (302), the rear end of the pipe sheath handle (203) is a hemispherical fixing seat, the buckle fixing seat (204) is arranged at the top of the hemispherical fixing seat, and the front end of the expansion pipe handle (302) is a frustum located in the hemispherical fixing seat.
7. The combination sheath dilation tube and ureteral sheath of claim 4, wherein: the side part of the sheath handle (203) is provided with a stone and liquid discharging joint (202) communicated with the sheath (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010899846.9A CN111921070B (en) | 2020-08-31 | 2020-08-31 | Combined structure of sheath-entering expansion tube and ureteral sheath |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010899846.9A CN111921070B (en) | 2020-08-31 | 2020-08-31 | Combined structure of sheath-entering expansion tube and ureteral sheath |
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| CN111921070A CN111921070A (en) | 2020-11-13 |
| CN111921070B true CN111921070B (en) | 2022-08-09 |
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| CN115737010B (en) * | 2022-12-09 | 2024-04-19 | 上海珩畅医疗科技有限公司 | Dilator for interventional therapy equipment |
| CN117653229B (en) * | 2023-05-25 | 2024-05-28 | 镇江恒生涓恩医疗器械有限公司 | Medical tube sheath with roller |
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| CN105231979A (en) * | 2015-10-19 | 2016-01-13 | 珠海康弘发展有限公司 | Medical endoscope, inner and outer sheath kits and medical endoscope system |
| CN108175483A (en) * | 2018-02-22 | 2018-06-19 | 上海英诺伟医疗器械有限公司 | Visual guidance sheath |
| CN209004195U (en) * | 2018-08-07 | 2019-06-21 | 深圳市康医博科技发展有限公司 | A kind of novel ureter negative pressure taking stone guide sheath |
| CN211066512U (en) * | 2019-08-21 | 2020-07-24 | 王怀亮 | Ureter soft lens conveying sheath assembly |
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| CN111921070A (en) | 2020-11-13 |
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