CN106955136B - A plugging device for body cavity - Google Patents
A plugging device for body cavity Download PDFInfo
- Publication number
- CN106955136B CN106955136B CN201710321348.4A CN201710321348A CN106955136B CN 106955136 B CN106955136 B CN 106955136B CN 201710321348 A CN201710321348 A CN 201710321348A CN 106955136 B CN106955136 B CN 106955136B
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- CN
- China
- Prior art keywords
- catheter
- membrane
- lantern
- proximal end
- distal end
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/12031—Type of occlusion complete occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12027—Type of occlusion
- A61B17/1204—Type of occlusion temporary occlusion
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/12—Surgical instruments, devices or methods, e.g. tourniquets for ligaturing or otherwise compressing tubular parts of the body, e.g. blood vessels, umbilical cord
- A61B17/12022—Occluding by internal devices, e.g. balloons or releasable wires
- A61B17/12131—Occluding by internal devices, e.g. balloons or releasable wires characterised by the type of occluding device
- A61B17/12159—Solid plugs; being solid before insertion
Abstract
The invention relates to an occluder for a body cavity, which comprises a guide wire, a catheter and a membrane, wherein the guide wire passes through the catheter and extends out of the distal end of the catheter, the proximal end of the membrane is connected with the distal end of the catheter, the distal end of the membrane is pulled by the guide wire so that the membrane is folded, the membrane is provided with a plurality of through holes arranged along the length direction, and the guide wire passes through the through holes in sequence in a positive and negative staggered manner, so that the membrane is folded into a wave shape when the guide wire is pulled. The device also comprises a lantern head catheter, the guide wire penetrates through the lantern head catheter, the guide wire is fixed with the distal end of the lantern head catheter, and the proximal end of the lantern head catheter is connected with the membrane. The ureteroscope lithotripsy device has a good blocking effect, can effectively avoid stone and fragments thereof from drifting in the lithotripsy process when being used for ureteroscope lithotripsy, can clear stone fragments in a ureter, and greatly improves the blocking effect compared with the existing blocking device, and belongs to the field of medical appliances.
Description
Technical Field
The invention relates to the field of medical equipment, in particular to a body cavity plugging device used for plugging ureteroscope lithotripsy, plugging thrombus in blood vessels and the like.
Background
Urinary calculi are common diseases of urinary surgery, wherein ureteroscope calculi account for about 65% of upper urinary calculi, and minimally invasive surgery is mainly adopted at present, wherein ureteroscope lithotripsy and lithotripsy (URL) are mainly adopted. Ureteroscope lithotripsy and stone extraction are operations performed by using the self pipeline organs of a human body, directly break up stones through physical means (titanium laser or air pressure trajectory and the like) and discharge the stones out of the body through urethra. However, the calculus fragments are likely to drift upward and even move upward into the kidneys during ureteroscope lithotripsy, thereby forming new calculus cores and secondary calculus. Therefore, a calculus blocking device is adopted to block the ureteral cavity behind the calculus before calculus breaking so as to block the migration of the calculus and clear up calculus fragments in the ureter.
The existing stone occluder such as a balloon occluder has the following problems: the balloon may be broken by the means used for lithotripsy, such as laser, during lithotripsy, and it is inconvenient to remove the stone debris along with the ureter. If the diaphragm type occluder is used, the diaphragm is folded to form a plug type occluder when the occluder is used for occluding, the existence of the occluder can not completely occlude the lumen on the section of the ureter lumen, and stone fragments are not removed conveniently due to the fact that the plug type diaphragm structure is not strong when stone breaking and flushing are carried out.
Disclosure of Invention
Aiming at the technical problems existing in the prior art, the invention aims at: an occluder for a body cavity is provided which is easy to control the folded shape of a membrane to effect occlusion.
In order to achieve the above purpose, the invention adopts the following technical scheme:
an occluder for a body lumen comprising a guide wire, a catheter, a membrane, the guide wire passing through the catheter and extending from the distal end of the catheter, the proximal end of the membrane being contiguous with the distal end of the catheter, the distal end of the membrane being pulled by the guide wire so that the membrane is folded; the membrane is provided with a plurality of perforations along the length direction, and the guide wires pass through the perforations in turn in a positive and negative staggered manner, so that the membrane is folded into a wave shape when the guide wires are pulled.
Preferably, the distal end of the membrane is directly secured to the guidewire.
As a preference, an occluder for a body lumen further comprises a lantern head catheter through which the guide wire passes, the guide wire being fixed to the distal end of the lantern head catheter, the proximal end of the lantern head catheter being connected to the membrane; the wall of the lantern catheter is provided with a plurality of openings extending along the length direction, and the openings are arranged along the circumferential direction, so that when the lantern catheter is pulled, the wall between the openings protrudes outwards, and the lantern catheter is in a lantern shape.
Preferably, the perforations are located on the centre line of the membrane; the perforations are uniformly or unevenly distributed along the centerline.
Preferably, the two sides of the bending part of the membrane are provided with shaping lines, and the membrane is folded along the shaping lines when being pulled.
Preferably, through holes which only allow liquid to pass through are uniformly distributed on the membrane.
Preferably, the lantern head catheter is shaped like a heart when being pulled, and the tip of the heart is arranged at the distal end of the lantern head catheter, so that the lantern head catheter is in an optimal shape, and has a good plugging reinforcing effect.
Preferably, the surfaces of the guide wire, the guide tube, the membrane and the lantern head guide tube are all covered with the lubricating coating.
Preferably, the occluder for a body lumen further comprises a handle and a positioning ruler; the distal end of the handle is connected with the proximal end of the catheter, and the distal end of the positioning ruler is connected with the proximal end of the guide wire; the positioning ruler is in the handle and translates along the far and near directions, and the proximal end of the positioning ruler extends out of the proximal end of the handle; the positioning ruler is sequentially provided with a full-unfolding wire, a partial traction wire and a full traction wire from near to far; when the fully-unfolded wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are both in an unfolded state; when the full traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in a folding state; when part of the traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in an unfolding state and a folding state.
Preferably, the outer side of the proximal end of the handle is provided with a guide groove extending along the length direction, the outer side of the proximal end of the positioning ruler is provided with positioning wings, and the positioning wings are clamped into the guide groove and slide linearly along the guide groove.
In general, the invention has the following advantages:
1. the smooth membrane is adopted, so that the calculus can easily pass through a gap between the calculus and the ureteral cavity when being unfolded, and reach the rear of the calculus; through the perforation that passes in proper order of seal wire positive and negative crisscross, the diaphragm is folded into wave structure, also is similar to folding fan-shaped, and the shape after folding is easily controlled, thereby the diaphragm atress is buckled and is had certain diaphragm bending structure intensity, and the structure of buckling of multilayer equidimension also forms the reinforced structure in different positions on the ureteral cavity cross-section of needs shutoff simultaneously, produces relatively better shutoff dynamics.
2. The lantern catheter is adopted, when the lantern catheter is unfolded, the lantern catheter is easy to penetrate through a gap between a body cavity and a blocked object, and when the lantern catheter is pulled and folded, the lantern catheter is raised, so that the lantern catheter has a blocking effect, can compress a folded membrane, increases the strength of a blocking part, and realizes reliable blocking.
3. The folded shape can be generally controlled by designing the position of the perforation; when the shaping line is arranged, the shape after folding can be accurately controlled, the bending angle of the bending structure which can be contacted with the maximum section of the ureteral cavity wall in the diaphragm is subjected to shaping treatment, so that the two corners of the bending position are sunken inwards, the diaphragm forms a nearly circular structure on the section of the ureteral cavity, the diaphragm forms a nearly circular blocking layer in the radial direction of the blocked urethra or other body cavities, and the blocking effect is optimized.
4. The surface of the membrane may or may not have a through hole, which allows the flow of body fluids (or blood) or flushing fluids without allowing the leakage of stone chips (or thrombus).
5. The hydrophilic lubricating coating is adopted, so that the calculus and ureteral cavity clearance can be easily penetrated.
6. After the membrane is folded, a certain cavity structure is formed between the folding layers, which is favorable for accommodating the dragging belt to clean the stone fragments.
7. The structure of the handle and the positioning ruler is adopted, the operation is easy, and a doctor can accurately position according to the marking line, select folding and unfolding states and select different plugging areas and effects according to medical needs.
8. The structure of the guide groove and the positioning wing are adopted to prevent the handle and the positioning ruler from rotating, and finally the relative rotation of the membrane and the guide wire is limited, and the locking of the handle and the positioning ruler is realized through the structure of the guide groove.
9. The blocking device is used in combination with ureteroscope lithotripsy, can effectively avoid drifting of stones and fragments thereof in the lithotripsy process, can clear up stone fragments in a ureter, and greatly improves the blocking effect compared with the existing blocking device.
Drawings
Fig. 1 is a schematic view of the present invention in an expanded state.
Fig. 2 is a schematic view of the folded state of the present invention.
Fig. 3 is a schematic view of a partially folded state of the present invention.
Fig. 4 is a schematic structural view of the handle.
Fig. 5 is a diagram of the folding effect of the membrane using shaping lines.
Wherein, 1 is the seal wire, 2 is the pipe, 3 is the diaphragm, 4 is the lantern head pipe, 5 is the perforation, 6 is the shaping line, 7 is the handle, 8 is the location chi, 9 is full expansion line, 10 is partial haulage line, 11 is full haulage line, 12 is the guide way, 13 is the locating wing.
Detailed Description
The present invention will be described in further detail below.
Example 1
An occluder for a body cavity is used for ureteroscope lithotripsy (URL), and comprises a guide wire, a catheter, a membrane, a lantern head catheter, a handle and a positioning ruler. The handle, the catheter, the membrane and the lantern head catheter are sequentially connected from the proximal end to the distal end, the positioning ruler is connected with the guide wire, the positioning ruler is positioned in the handle and slides along the handle in the far-near direction, the guide wire sequentially passes through the perforation of the catheter and the membrane and the lantern head catheter, and the distal end of the lantern head catheter is fixed with the guide wire.
The guide wire is made of metal in the embodiment. The distal end of the guide wire is a guiding end which guides the occluder into the ureteral cavity and through the calculus.
The catheter is made of medical grade materials such as TPU, PEBAX, nylon and the like, the outer diameter of the catheter is preferably 1mm, and the inner diameter of the catheter is preferably 0.4mm. The pipe wall can be a common pipe wall or a braided pipe wall.
The lantern catheter is made of PEBAX, TPU, nylon and other materials, the outer diameter is preferably about 1mm, and the inner diameter is preferably 0.4mm. The guide wire passes through the lantern head catheter, the guide wire is fixed with the distal end of the lantern head catheter, the proximal end of the lantern head catheter is connected with the membrane, and the proximal end of the lantern head catheter is movable relative to the guide wire; the wall of the lantern catheter is provided with four openings extending along the length direction, and the openings are arranged along the circumferential direction, so that when the lantern catheter is pulled, the wall between the openings protrudes outwards, and the lantern catheter is in a lantern shape. The lantern head catheter is formed by cutting the catheter with a clamp along the axial direction and then shaping with a die, and the catheter is optimally shaped like a heart, namely the distal end of the catheter is a heart-shaped tip. The heart shape of the expanded heart-shaped lantern head catheter can well support the plugging structure of the folded membrane.
The membrane can be soft medical grade film such as TPU, PTFE, etc., preferably TPU film, and the film layer can be single-layer film or multi-layer film. The film length is preferably 60mm and the width is preferably 10mm. When in use, the guide wire moves towards the proximal end, and the membrane is forced to bend and fold into a multi-layer ribbon type plugging structure which is wavy and approximately perpendicular to the guide wire. Wherein the guide wire passes through the catheter and the membrane and is provided with a plurality of perforations which are unevenly distributed or evenly distributed along the long end, preferably unevenly distributed perforations, and the distribution of the perforations can lead the membrane to be bent into 2S shapes, thereby leading the membrane to form a section with the side length of 10mm when being bent. The membrane is forced to bend and fold to form a shaping line at the bending angle of the bending structure with the largest cross section of the wavy multi-layer ribbon type plugging structure, so that the plugging cross section forms a shape similar to a regular hexagon, and preferably, the six corners of the regular hexagon cross section are shaped again, so that the plugging cross section forms a shape similar to a dodecagon, and is more similar to a circle and has better plugging effect. The membrane shaping is made by high frequency hot pressing, for example, the membrane layer of the membrane is two (or more) pieces, and can also be made by die cutting. The surface of the membrane may or may not have a through hole. The through holes may be circular or may be other shapes.
The handle and the positioning ruler are made of medical grade plastics. The distal end of the handle is connected with the proximal end of the catheter, and the distal end of the positioning ruler is connected with the proximal end of the guide wire; the positioning ruler is in the handle and translates along the far and near directions, and the proximal end of the positioning ruler extends out of the proximal end of the handle; the positioning ruler is sequentially provided with a full-unfolding wire, a partial traction wire and a full traction wire from near to far; when the fully-unfolded wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are both in an unfolded state; when the full traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in a folding state; when part of the traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in an unfolding state and a folding state. The guide slot extending along the length direction is arranged at the outer side of the proximal end of the handle, and the positioning wings are arranged at the outer side of the proximal end of the positioning ruler and clamped into the guide slot to slide linearly along the guide slot.
The surfaces of the guide wire, the guide tube, the membrane and the lantern head guide tube are covered with the lubricating coating.
The use process is as follows: in the initial state, the occluder is in a fully unfolded state, the membrane is a smooth membrane, and the lantern head catheter is also in a common catheter shape. The diaphragm passes through the gap between the calculus and the ureteral cavity, so that the diaphragm reaches the rear of the calculus. The guide wire is pulled by the positioning ruler, so that the membrane is forced to be bent and folded into a wavy multilayer ribbon structure, and then the guide wire is further pulled, so that the lantern head catheter is opened to form a lantern head shape to further support the membrane structure, and a good plugging effect is formed. After the lithotriptis carried out, the stopper is slowly withdrawn to bring the lithotriptis out of the ureter and enter the bladder for cleaning, and the supporting force of the stopper is reduced or the blocking section is reduced by loosening the catheter of the lantern head or even loosening the diaphragm so as to adapt to the requirement of cleaning the lithotriptis. After the broken stone is removed, the positioning ruler is adjusted to a full-expansion state of the diaphragm and is withdrawn from the body.
Example two
An occluder for a body cavity is used for ureteroscope lithotripsy (URL), and comprises a guide wire, a catheter, a membrane, a handle and a positioning ruler. The handle, the catheter and the diaphragm are sequentially connected from the proximal end to the distal end, the positioning ruler is connected with the guide wire, the positioning ruler is positioned in the handle and slides along the handle in the far-near direction, the guide wire sequentially penetrates through the perforation of the catheter and the perforation of the diaphragm, and the distal end of the diaphragm is fixed with the guide wire.
This embodiment is not mentioned in part as embodiment one.
Except the mode mentioned in the embodiment, each bending of the wave shape of the diaphragm can be equal or unequal, so that the perforations on the diaphragm can be equally divided along the long end or unevenly divided, and the positions of the perforations can be the center positions of circles when the diaphragm is bent and folded into a projection section of a structure, or can be the positions of circles; the invention can also be used for plugging thrombus in blood vessels. These variations are all within the scope of the present invention.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (6)
1. An occluder for a body lumen comprising a guidewire, a catheter, a membrane, the guidewire extending through the catheter and out of the distal end of the catheter, the proximal end of the membrane being contiguous with the distal end of the catheter, the distal end of the membrane being pulled by the guidewire so that the membrane is folded, characterized in that: the membrane is provided with a plurality of perforations arranged along the length direction, and the guide wires pass through the perforations in turn in a positive and negative staggered manner, so that the membrane is folded into a wave shape when the guide wires are pulled;
the plugging device also comprises a lantern head catheter, a guide wire penetrates through the lantern head catheter, the guide wire is fixed with the distal end of the lantern head catheter, and the proximal end of the lantern head catheter is connected with the membrane; the wall of the lantern head duct is provided with a plurality of openings extending along the length direction, and the openings are arranged along the circumferential direction, so that when the lantern head duct is pulled, the wall between the openings protrudes outwards, and the lantern head duct is lantern-shaped;
the plugging device also comprises a handle and a positioning ruler; the distal end of the handle is connected with the proximal end of the catheter, and the distal end of the positioning ruler is connected with the proximal end of the guide wire; the positioning ruler is in the handle and translates along the far and near directions, and the proximal end of the positioning ruler extends out of the proximal end of the handle; the positioning ruler is sequentially provided with a full-unfolding wire, a partial traction wire and a full traction wire from near to far; when the fully-unfolded wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are both in an unfolded state; when the full traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in a folding state; when part of the traction wire is opposite to the proximal end of the handle, the membrane and the lantern head catheter are in an unfolding state and a folding state;
the outer side of the proximal end of the handle is provided with a guide groove extending along the length direction, the outer side of the proximal end of the positioning ruler is provided with positioning wings, and the positioning wings are clamped into the guide groove and slide linearly along the guide groove;
through holes which only allow liquid to pass through are uniformly distributed on the membrane.
2. An occluder for a body lumen as set forth in claim 1, wherein: the distal end of the membrane is directly secured to the guidewire.
3. An occluder for a body lumen as set forth in claim 1, wherein: the perforation is positioned on the central line of the membrane; the perforations are uniformly or unevenly distributed along the centerline.
4. An occluder for a body lumen as set forth in claim 3, wherein: shaping lines are arranged on two sides of the bending part of the diaphragm, and the diaphragm is folded along the shaping lines during traction.
5. An occluder for a body lumen as set forth in claim 1, wherein: when the lantern catheter is pulled, the lantern catheter is shaped like a heart, and the tip of the heart is arranged at the distal end of the lantern catheter.
6. An occluder for a body lumen as set forth in claim 1, wherein: the surfaces of the guide wire, the guide tube, the membrane and the lantern head guide tube are covered with the lubricating coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321348.4A CN106955136B (en) | 2017-05-09 | 2017-05-09 | A plugging device for body cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710321348.4A CN106955136B (en) | 2017-05-09 | 2017-05-09 | A plugging device for body cavity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106955136A CN106955136A (en) | 2017-07-18 |
| CN106955136B true CN106955136B (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710321348.4A Active CN106955136B (en) | 2017-05-09 | 2017-05-09 | A plugging device for body cavity |
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| Country | Link |
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| CN (1) | CN106955136B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195342Y (en) * | 1994-07-07 | 1995-04-26 | 刘勤知 | Urinary catheter |
| CN102988093A (en) * | 2012-12-05 | 2013-03-27 | 徐桂彬 | Multi-section foldable ureter plugging device |
| CN105748127A (en) * | 2016-04-27 | 2016-07-13 | 中国人民解放军第二军医大学 | Diaphragm type body cavity blocking equipment |
| CN207604982U (en) * | 2017-05-09 | 2018-07-13 | 吴健强 | A kind of plugging device for body cavity |
-
2017
- 2017-05-09 CN CN201710321348.4A patent/CN106955136B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2195342Y (en) * | 1994-07-07 | 1995-04-26 | 刘勤知 | Urinary catheter |
| CN102988093A (en) * | 2012-12-05 | 2013-03-27 | 徐桂彬 | Multi-section foldable ureter plugging device |
| CN105748127A (en) * | 2016-04-27 | 2016-07-13 | 中国人民解放军第二军医大学 | Diaphragm type body cavity blocking equipment |
| CN207604982U (en) * | 2017-05-09 | 2018-07-13 | 吴健强 | A kind of plugging device for body cavity |
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| Publication number | Publication date |
|---|---|
| CN106955136A (en) | 2017-07-18 |
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