CN106963457B - Laparoscope puncture sheath - Google Patents
Laparoscope puncture sheath Download PDFInfo
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- CN106963457B CN106963457B CN201710221195.6A CN201710221195A CN106963457B CN 106963457 B CN106963457 B CN 106963457B CN 201710221195 A CN201710221195 A CN 201710221195A CN 106963457 B CN106963457 B CN 106963457B
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
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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
- A61B17/3494—Trocars; Puncturing needles with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors
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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
- A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
- A61B2017/00292—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means
- A61B2017/0034—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery mounted on or guided by flexible, e.g. catheter-like, means adapted to be inserted through a working channel of an endoscope
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B2017/3419—Sealing means between cannula and body
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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
- A61B17/3417—Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating
- A61B17/3421—Cannulas
- A61B2017/3445—Cannulas used as instrument channel for multiple instruments
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- Life Sciences & Earth Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
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- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Endoscopes (AREA)
- Surgical Instruments (AREA)
Abstract
The application discloses a laparoscope puncture sheath which comprises an outer tube and an inner tube sleeved in the outer tube, wherein the longitudinal section of the inner tube is T-shaped, two sides of the outer wall of the upper end of the inner tube are respectively provided with an upper clamping groove and a lower clamping groove, the lower end of the inner tube is fixedly provided with a circular ring, at least three supporting fins are uniformly distributed on the circular ring, the joint of each supporting fin and the circular ring is provided with a torsion spring, the longitudinal section of the outer tube is also T-shaped, two sides of the tube wall of the upper end of the outer tube are respectively provided with a through hole, and telescopic mechanisms are arranged in the through holes and can fix the clamping grooves of the inner tube and adjust the relative positions of the inner tube and the outer tube. The puncture sheath realizes the fixation of the puncture sheath in the abdominal cavity through the opening action of the support wings in the abdominal cavity, can effectively solve the problem that the existing puncture sheath is not easy to fix in the abdominal cavity, greatly reduces the trauma of the operation to a patient, has better air tightness, provides a stable and reliable operation channel for the operation, and has higher practical value.
Description
Technical Field
The application relates to the field of medical equipment, in particular to a laparoscope puncture sheath.
Background
The laparoscopic surgery is a minimally invasive surgery, because of small bleeding, small trauma and quick recovery, one of the important surgical operations is that a necessary instrument for laparoscopic surgery is a laparoscopic puncture outfit, and a general laparoscopic puncture outfit comprises a puncture sheath and a puncture needle.
The lower end of the existing puncture sheath is mostly in a straight cylinder shape, and after penetrating into the abdominal cavity, the puncture outfit can be extruded out by small-amplitude actions of a patient, such as respiration, heart beating and the like, so that secondary puncture is caused, and unnecessary body wounds are caused to the patient. Therefore, medical staff is often required to fix the puncture sheath manually in the operation process, which not only consumes manpower, but also occupies space resources around the operation table, so that it is necessary to provide the puncture sheath capable of being fixed in the abdominal cavity to make up for the defects in the prior art.
Disclosure of Invention
In order to solve the problems, the application provides a laparoscope puncture sheath, a sleeve is sleeved on an outer tube of the puncture sheath, a supporting fin is arranged below the sleeve, the top end of the sleeve is pushed to be level with the top end of the outer tube, and the supporting fin is matched with a torsion spring, so that the supporting fin is skillfully supported in an abdominal cavity, and the puncture sheath is fixed in the abdominal cavity.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the utility model provides a peritoneoscope puncture sheath, includes outer tube and suit in the inside inner tube of outer tube, the longitudinal section of inner tube is the T type, and the both sides of inner tube upper end outer wall all are equipped with two upper and lower draw-in grooves, be used for with the outer tube is fixed, the lower extreme of inner tube is fixed with a ring, even distribution has at least three support wing on the ring, and every support wing all is equipped with torsion spring with the junction of ring, torsion spring's one end laminating is in on the inner wall of inner tube, the other end laminating is in on the wing of support wing, the vertical distance between upper and lower two draw-in grooves is the same with the length of support wing, namely: when the lower clamping groove is fixed with the outer tube, the puncture sheath is in an original state, and the inner tube is extruded into the outer tube, so that the upper clamping groove is fixed with the outer tube, and the moving distance of the inner tube into the outer tube is the length of the supporting fin;
the longitudinal section of the outer tube is also T-shaped, two sides of the tube wall at the upper end of the outer tube are respectively provided with a through hole, the through holes correspond to the vertical positions of the clamping grooves, telescopic mechanisms are arranged in the through holes, baffle plates are arranged in the telescopic mechanisms, and the telescopic mechanisms are used for fixing the clamping grooves of the inner tube and adjusting the relative positions of the inner tube and the outer tube by controlling the extension and retraction of the baffle plates.
As a preferable scheme, the through hole is a transverse long hole, the telescopic mechanism comprises a rotary shaft fixed on the bottom end face of the long hole, a circular plate is fixed on the rotary shaft, a baffle is fixed at the edge of the circular plate, an included angle between the circular plate and the baffle is larger than 90 degrees and smaller than 180 degrees, the baffle is screwed in and screwed out of the long hole through left and right rotation of a knob, and the technical scheme can also be used for realizing simple replacement of a technical means according to the pressing principle of pressing a ball pen by arranging a button, a push rod, a sliding claw sleeve and a spring in the through hole, and realizing extension and retraction of the baffle through pressing the button, wherein the structure can see the internal structure of the pressing ball pen, and is not repeated herein, but the core function of the telescopic mechanism is to realize extension and retraction of the baffle, further realize fixation of the vertical position between the inner cylinder and the outer tube, and prevent the inner cylinder and the outer tube from shaking in the vertical direction.
As a preferable scheme, the outer diameter of the inner cylinder is the same as the inner diameter of the outer tube, a longitudinal bulge is arranged on the outer wall of the middle part of the inner cylinder, a groove is arranged at the position of the outer tube corresponding to the bulge, and relative rotation between the inner cylinder and the outer tube is prevented by the cooperation of the bulge and the groove.
As a preferable scheme, the upper end of the outer tube is provided with a circle of first bulges, the lower part of the upper end of the inner tube is provided with a circle of second bulges, the inner tube is fixed in the outer tube through the first bulges by the outer tube, and the inner tube is prevented from being pulled out from the upper end of the outer tube when the baffle is in a retracted state, so that the inner tube and the outer tube are separated.
Further, the left end and the right end of the upper end of the supporting fin are both cylindrical sleeves, the edges of the cross section of the fin body of the supporting fin are arc-shaped, the supporting fin is sleeved on the circular ring through the sleeves, the upper end of the supporting fin is hollow, the torsion spring is positioned in the hollow part of the upper end of the supporting fin and is sleeved on the circular ring, and the supporting fin is pushed out of the outer tube downwards by the inner tube, and the supporting fin is opened by the torsion force of the torsion spring.
Further, a sealing ring is arranged on the outer wall of the inner cylinder above the circular ring, so that air tightness is guaranteed.
Further, the length from the top end of the inner cylinder to the circular ring is the same as the length of the outer tube, and when the top end of the inner cylinder is pushed to be held with the top end of the outer tube, the support fins can be just ensured to be fully spread.
Further, in order to enable the torsion force of the torsion spring to be uniformly applied to the wing bodies of the supporting wings, two end portions of the torsion spring are bent inwards to form right angles, so that the torsion force arm of the torsion spring is in contact with the inner wall of the inner cylinder and the wing bodies of the supporting wings as much as possible.
Furthermore, the tail ends of the support wings are provided with round corners, so that secondary injury to the abdominal cavity of a human body caused by the support wings is prevented.
Further, the inner wall of the upper end of the inner cylinder is provided with mounting threads for being connected with other parts on the puncture outfit.
In practical application, the upper clamping groove and the lower clamping groove are used for realizing the adjustment of the vertical installation position between the inner cylinder and the outer tube, in the initial state, the baffle plate is clamped in the lower clamping groove on the outer wall of the inner cylinder, meanwhile, the length from the upper circular ring of the inner cylinder to the top end of the inner cylinder is the same as that of the whole outer tube, the supporting fins are all positioned on the inner side of the outer tube, and the fin bodies of the supporting fins are tightly attached to the inner wall of the outer tube under the torsion action of the torsion spring due to the torsion action of the torsion spring;
when the knob of the telescopic mechanism is rotated, the baffle plate is rotated to the outer side of the clamping groove, the inner cylinder can be pushed downwards until the upper end part of the inner cylinder is leveled with the outer pipe, the telescopic mechanism is rotated to clamp the baffle plate in the upper clamping groove, and in the process of downward movement of the inner cylinder, the supporting fins gradually extend out of the lower end of the outer pipe and gradually realize the opening action under the action of the elastic torsion force of the torsion spring.
Compared with the prior art, the application has the beneficial effects that:
1) According to the application, the puncture sheath is designed into the form of an outer tube and an inner tube, the supporting wings are connected below the inner tube, the supporting wings are spread in the abdominal cavity by pushing the inner tube into the outer tube and by the torsion force of the torsion spring, so that the puncture sheath can be firmly fixed in the abdominal cavity, and the stability of the puncture sheath position in the operation process is ensured, thereby effectively avoiding the conditions that the puncture sheath cannot be stably fixed in the abdominal cavity, is extruded out of the abdominal cavity and the like in the past, and avoiding the faults of secondary puncture and unnecessary trauma to a patient;
2) The application can be automatically fixed in the abdominal cavity without manual fixation of medical staff, thereby saving the operation space around the operating table while reducing the manpower and bringing convenience to the activities of the medical staff;
3) When the surgical operation device is in a working state, the end of the surgical operation device is supported by the support wings, so that the operation space of the surgical operation device can be obviously increased, the smooth operation is facilitated, and under the condition of larger focus, the number of puncture holes can be reduced due to the large operation space constructed by supporting wings in a supporting way, so that the surgical operation wound of a patient is further reduced;
4) The sealing ring is arranged between the inner tube and the outer tube, so that the tightness of a gap between the inner tube and the outer tube can be ensured, and the smooth conveying of gas into the abdominal cavity in the operation process can be ensured.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a block diagram of the present application;
FIG. 2 is a side view of the present application;
FIG. 3 is a longitudinal cross-sectional view of the present application;
FIG. 4 is a block diagram of a telescoping mechanism of the present application;
FIG. 5 is a block diagram of a support fin of the present application;
FIG. 6 is a state diagram of the use of the present application;
FIG. 7 is a view showing the use of the support fin of the present application;
wherein: the device comprises a 1-outer tube, a 2-inner tube, a 3-clamping groove, a 4-circular ring, a 5-supporting fin, a 6-torsion spring, a 7-through hole, an 8-telescopic mechanism, a 9-baffle, a 10-rotating shaft, a 11-circular plate, a 12-knob, a 13-first protrusion, a 14-second protrusion, a 15-sleeve, a 16-mounting thread and a 17-chamfer.
The specific embodiment is as follows:
the application will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
In a typical embodiment of the present application, as shown in fig. 1 and 2, a laparoscopic puncture sheath includes an outer tube 1 and an inner tube 2 sleeved inside the outer tube 1, wherein the longitudinal section of the inner tube 2 is T-shaped, two sides of the outer wall of the upper end of the inner tube 2 are respectively provided with an upper clamping groove 3 and a lower clamping groove 3, the lower end of the inner tube 2 is fixed with a circular ring 4, at least three support fins 5 are uniformly distributed on the circular ring 4, torsion springs 6 are arranged at the connection part of each support fin 5 and the circular ring 4, and the vertical distance between the upper clamping groove 3 and the lower clamping groove 3 is the same as the length of the support fin 5;
the longitudinal section of the outer tube 1 is also T-shaped, two sides of the tube wall at the upper end of the outer tube 1 are respectively provided with a through hole 7, the through holes correspond to the vertical positions of the clamping grooves 3, telescopic mechanisms 8 are arranged in the through holes 7, baffle plates 9 are arranged in the telescopic mechanisms 8, and the telescopic mechanisms 8 are used for fixing the clamping grooves 3 on the inner tube 2 by controlling the extending and retracting of the baffle plates 8, so that the relative positions of the inner tube 2 and the outer tube 1 are adjusted.
The through hole 7 is a transverse long hole, the telescopic mechanism 8 comprises a rotary shaft 10 fixed on the bottom end face of the long hole, the rotary shaft 10 is a bolt, a circular plate 11 is fixed on the bolt, a baffle 9 is fixed at the edge of the circular plate 11, an included angle between the circular plate and the baffle is 110 degrees, and the baffle 9 is screwed in and out of the long hole by rotating the knob 12 left and right.
The outer diameter of the inner cylinder 2 is the same as the inner diameter of the outer tube 1, a longitudinal bulge is arranged on the outer wall of the middle part of the inner cylinder 2, a groove is arranged at the position of the outer tube 1 corresponding to the bulge, relative rotation between the inner cylinder 2 and the outer tube 1 is prevented through the cooperation of the bulge and the groove, and the length of the groove is longer than that of the bulge.
The upper end of the outer tube 1 is provided with a circle of first bulges 13, the lower part of the upper end of the inner tube 2 is provided with a circle of second bulges 14, the inner tube 2 is fixed in the outer tube 1 through the first bulges 13 by the outer tube 1, and when the baffle 9 is in a retracted state, the inner tube 2 is prevented from being pulled out from the upper end of the outer tube 1, so that the inner tube 2 and the outer tube are separated.
The left and right ends of the upper end of the support fin 5 are cylindrical sleeves 15, the cross section edge of the fin body of the support fin 5 is arc-shaped, the support fin 5 is sleeved on the circular ring 4 through the sleeves 15, the upper end of the support fin 5 is hollow, the torsion spring 6 is positioned at the hollow part of the upper end of the support fin 5 and sleeved on the circular ring 4, the support fin 5 is pushed out of the outer tube 1 downwards by the inner tube 2, the opening action is realized through the torsion force of the torsion spring 6, and the lower end of the support fin 5 is rounded so as to prevent the support fin 5 from causing secondary injury to the abdominal cavity of a human body in the opening process. Of course, the number, shape, etc. of the support fins may be set according to practical situations, in this embodiment, the number of support fins 5 is 3, the upper end of each support fin 5 is rectangular, and the end is arc-shaped.
And a sealing ring is arranged on the outer wall of the inner cylinder above the circular ring 4, so that the air tightness is ensured.
The length from the top end of the inner cylinder 2 to the circular ring 4 is the same as the length of the outer tube 1, and when the top end of the inner cylinder 2 is pushed to be in the same level with the top end of the outer tube 1, the support fins 5 can be just ensured to be fully spread.
In order to make the torsion force of the torsion spring 6 uniformly applied to the fin body of the supporting fin 5, both ends of the torsion spring 6 are bent inwards to form right angles, so that the torsion force arm of the torsion spring 6 contacts with the inner wall of the inner barrel 2 and the fin body of the supporting fin 5 as much as possible, it should be noted that the torsion spring 6 shown in the above drawings is only one preferred choice, and in the actual production process, the mode that both ends of the torsion spring are bent towards the same direction and the center part extends along the radial direction of the torsion spring can be adopted, no matter what mode is adopted, the core is that the torsion spring can drive the supporting fin to prop open when being positioned at the clamping groove under the inner barrel 2, so that the simple replacement of the technical scheme performed in this point should belong to the realization under the condition of the application, and should fall into the scope of the application.
The side wall edges of the support fins 5 are rounded, so that secondary injury to the abdominal cavity of a human body caused by the support fins 5 is prevented.
The inner wall of the upper end of the inner cylinder 2 is provided with a mounting thread 16 for connecting with other components on the puncture outfit, which are well known to those skilled in the art, and are not described herein again, and are not shown in the drawings.
In practical application, the upper and lower clamping grooves 3 are used for realizing adjustment of the vertical installation position between the inner tube 2 and the outer tube 1, in the initial state of the laparoscope puncture sheath according to the embodiment, the baffle plate 9 is clamped in the lower clamping groove on the outer wall of the inner tube 2, meanwhile, as the length from the circular ring in the inner tube 2 to the top end of the inner tube 2 is the same as the length of the whole outer tube 1, the supporting fins 5 are all positioned at the inner side of the outer tube 1, and as the torsion action of the torsion spring 6, the fin bodies of the supporting fins 5 are tightly attached to the inner wall of the outer tube 1 under the torsion action of the torsion spring 6;
when the knob 12 of the telescopic mechanism 8 is rotated to enable the baffle plate to be screwed to the outer side of the clamping groove 3, the inner cylinder 2 can be pushed downwards until the upper end part of the inner cylinder 2 is leveled with the upper end part of the outer tube 1, the knob 12 on the telescopic mechanism 8 is rotated to clamp the baffle plate 9 in the upper clamping groove 3, in the downward moving process of the inner cylinder 2, the supporting fins 5 gradually extend out of the lower end of the outer tube 1, and under the action of elastic torsion force of the torsion spring 6, the opening action is gradually completed.
Example 2
Unlike embodiment 1, the telescopic mechanism 8 may also be a push mechanism formed by arranging a button, a push rod, a sliding claw sleeve and a spring in the through hole 7 according to the principle of pushing the ball-point pen, and the extension and retraction of the baffle plate is realized by pushing the button, which is referred to as the internal structure of the ball-point pen, and will not be described herein.
The application method of the embodiment 1 of the application comprises the following steps:
the upper end of the puncture outfit is provided with an air supply structure, the puncture needle is inserted, the puncture needle with a puncture sheath penetrates into the abdominal cavity of a patient, the puncture needle is pulled out, a knob on the telescopic mechanism is adjusted, the baffle plate is selected from the lower clamping groove, the outer tube is held by the hand to fix the position of the puncture needle, the inner tube is gradually pressed into the outer tube, in the process, the supporting wing below the inner tube is gradually opened under the torsion action of the torsion spring until the upper end of the inner tube and the upper end of the outer tube are kept flat, the supporting wing is completely opened, the knob on the telescopic mechanism is rotated, the baffle plate is screwed into the upper clamping groove of the inner tube, the fixing of the relative position between the inner tube and the outer tube is realized, and the diameter of the upper end of the outer tube is larger than the diameter of the lower part, so that the puncture sheath is clamped on the abdominal wall to prevent slipping.
The application method of the embodiment 2 of the application comprises the following steps:
different from the above process, the extension and contraction of the baffle are realized by pressing the button of the pressing mechanism, so that the adjustment of the relative position between the inner cylinder and the outer tube is realized.
The above description is only of preferred embodiments of the present application and is not intended to limit the application, but various modifications and variations can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
While the foregoing description of the embodiments of the present application has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the application, but rather, it is intended to cover all modifications or variations within the scope of the application as defined by the claims of the present application.
Claims (8)
1. A laparoscopic puncture sheath, characterized in that: the novel steel wire rope comprises an outer tube and an inner tube sleeved in the outer tube, wherein the longitudinal section of the inner tube is T-shaped, an upper clamping groove and a lower clamping groove are formed in two sides of the outer wall of the upper end of the inner tube, a circular ring is fixed at the lower end of the inner tube, at least three supporting fins are uniformly distributed on the circular ring, torsion springs are arranged at the joint of each supporting fin and the circular ring, and the vertical distance between the upper clamping groove and the lower clamping groove is the same as the length of each supporting fin;
the longitudinal section of the outer tube is also T-shaped, two sides of the tube wall at the upper end of the outer tube are respectively provided with a through hole, the through holes correspond to the vertical positions of the clamping grooves, a telescopic mechanism is arranged in each through hole, a baffle is arranged in each telescopic mechanism, and the telescopic mechanism is used for fixing the clamping grooves of the inner tube and adjusting the relative positions of the inner tube and the outer tube by controlling the extension and retraction of the baffle;
the tail ends of the support fins are provided with round corners, so that secondary damage to the abdominal cavity of a human body caused by the support fins is prevented;
the inner wall of the upper end of the inner barrel is provided with mounting threads for connecting with other parts on the puncture outfit.
2. A laparoscopic penetration sheath according to claim 1, characterized in that: the through hole is a transverse long hole, the telescopic mechanism comprises a rotating shaft fixed on the bottom end face of the long hole, a circular plate is fixed on the rotating shaft, a baffle is fixed at the edge of the circular plate, an included angle between the circular plate and the baffle is larger than 90 degrees and smaller than 180 degrees, and the baffle is screwed in and out of the long hole through left and right rotation of a knob.
3. A laparoscopic penetration sheath according to claim 1, characterized in that: the outer diameter of the inner cylinder is the same as the inner diameter of the outer tube, a longitudinal bulge is arranged on the outer wall of the middle part of the inner cylinder, a groove is arranged at the position of the outer tube corresponding to the bulge, and relative rotation between the inner cylinder and the outer tube is prevented through the cooperation of the bulge and the groove.
4. A laparoscopic penetration sheath according to claim 1, characterized in that: the upper end of the outer tube is provided with a circle of first bulges, the lower part of the upper end of the inner tube is provided with a circle of second bulges, and the outer tube is used for fixing the inner tube in the outer tube through the first bulges.
5. A laparoscopic penetration sheath according to claim 1, characterized in that: the left end and the right end of the upper end of the supporting fin are cylindrical sleeves, the supporting fin is sleeved on the circular ring through the sleeves, the upper end of the supporting fin is hollow, the torsion spring is positioned in the hollow part of the upper end of the supporting fin and is sleeved on the circular ring, and the supporting fin is stretched out by the torsion of the torsion spring in the process that the inner cylinder pushes out the outer tube downwards.
6. A laparoscopic penetration sheath according to claim 1, characterized in that: and a sealing ring is arranged on the outer wall of the inner cylinder above the circular ring, so that the air tightness is ensured.
7. A laparoscopic penetration sheath according to claim 1, characterized in that: the length from the top end of the inner cylinder to the circular ring is the same as the length of the outer tube.
8. A laparoscopic penetration sheath according to claim 1, characterized in that: both end portions of the torsion spring are bent inward at right angles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221195.6A CN106963457B (en) | 2017-04-06 | 2017-04-06 | Laparoscope puncture sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710221195.6A CN106963457B (en) | 2017-04-06 | 2017-04-06 | Laparoscope puncture sheath |
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| Publication Number | Publication Date |
|---|---|
| CN106963457A CN106963457A (en) | 2017-07-21 |
| CN106963457B true CN106963457B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710221195.6A Active CN106963457B (en) | 2017-04-06 | 2017-04-06 | Laparoscope puncture sheath |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107753092B (en) * | 2017-11-30 | 2024-01-19 | 彭翼 | Intra-cavity intima stripping device |
| CN108742735B (en) * | 2018-07-26 | 2024-04-26 | 佛山特种医用导管有限责任公司 | Fixing device |
| CN108938056B (en) * | 2018-08-01 | 2024-04-09 | 四川省医学科学院·四川省人民医院 | Telescopic fixed type endoscopic puncture outfit |
| CN113413201B (en) * | 2021-07-30 | 2023-09-08 | 上海微创医疗机器人（集团）股份有限公司 | Puncture outfit and endoscope robot |
| WO2023006049A1 (en) * | 2021-07-30 | 2023-02-02 | 上海微创医疗机器人（集团）股份有限公司 | Puncture outfit and endoscope robot |
| CN113413200B (en) * | 2021-07-30 | 2023-02-07 | 上海微创医疗机器人（集团）股份有限公司 | Puncture outfit and endoscope robot |
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| CN106963457A (en) | 2017-07-21 |
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