CN112754553A - Internal expanding sleeve - Google Patents

Internal expanding sleeve Download PDF

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Publication number
CN112754553A
CN112754553A CN202110077531.0A CN202110077531A CN112754553A CN 112754553 A CN112754553 A CN 112754553A CN 202110077531 A CN202110077531 A CN 202110077531A CN 112754553 A CN112754553 A CN 112754553A
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CN
China
Prior art keywords
sleeve
expansion
outer sleeve
tube
inner sleeve
Prior art date
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.)
Pending
Application number
CN202110077531.0A
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Chinese (zh)
Inventor
王振海
王峻晨
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to CN202110077531.0A priority Critical patent/CN112754553A/en
Publication of CN112754553A publication Critical patent/CN112754553A/en
Pending legal-status Critical Current

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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
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
    • 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
    • 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
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/02—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors
    • A61B17/0218—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery
    • A61B2017/0225—Surgical instruments, devices or methods, e.g. tourniquets for holding wounds open; Tractors for minimally invasive surgery flexible, e.g. fabrics, meshes, or membranes

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Reproductive Health (AREA)
  • Vascular Medicine (AREA)
  • Surgical Instruments (AREA)

Abstract

The invention relates to an internal dilating cannula, belonging to the field of medical appliances. The inner expansion sleeve comprises an inner sleeve, an outer sleeve and a power-assisted screw cap, and the inner sleeve and the outer sleeve are both provided with a tube head end and a tube tail end; the inner sleeve is hollow, the tube head end of the inner sleeve is of an outwards-expanded bell mouth structure, the outer wall of the tube tail end of the inner sleeve is provided with an external thread, and the power-assisted screw cap is provided with an internal thread matched with the external thread; the outer sleeve is hollow inside and sleeved outside the inner sleeve, the outer sleeve is provided with side holes, longitudinal notches are formed in the outer sleeve in an extending mode along the side holes towards the end of the tube head of the outer sleeve, expansion blades are formed on the tube wall between every two adjacent longitudinal notches, and the inner sleeve is driven to move through the rotary power-assisted screw cap to enable the expansion blades to radially expand or close. In the operation process of the endoscope, the invention utilizes the internal expansion sleeve to expand soft tissues around the operation space from the body on the premise of not expanding the skin incision, thereby expanding the operation visual field of the endoscope and reducing the shielding under a soft tissue endoscope.

Description

Internal expanding sleeve
Technical Field
The invention relates to an internal dilating cannula, belonging to the technical field of medical appliances.
Background
At present, various working canulas used in the spinal endoscopic surgery process adopt gradual expansion to reach the required under-endoscope working space according to different inner diameters. The inner diameter of the existing various cannulas is invariable, and in the clinical operation process, if the inner diameter of the cannula is too small, the situation that the soft tissue under the endoscope blocks the operation visual field is often encountered; if the inner diameter is too large, the incision in the skin needs to be lengthened or enlarged, causing greater trauma to the patient.
When the working cannula is used clinically, when the inner diameter of the working cannula is small, an incision is small in the operation process, and the injury to a patient is small, but an operator can spend a large amount of time for cleaning soft tissues blocking the visual field, and meanwhile, the operation space under the endoscope is small, the visual field is small, and the working efficiency is low; when the inner diameter of the working sleeve is increased, the incision is enlarged and the injury is increased in the operation process, which contradicts the minimally invasive concept and causes more side injuries to patients.
Disclosure of Invention
The invention aims to provide a sleeve for local expansion in a body, which expands soft tissues around an operation space from the body to the periphery by using an inner expansion sleeve on the premise of not expanding skin incisions, expands the operation space under a microscope to improve the working efficiency, and can generate a compression hemostasis effect by expanding the peripheral soft tissues. After the operation is finished, the sleeve can be conveniently taken out.
In order to solve the problem of realizing the aim of the invention, the invention adopts the following technical scheme:
an inner expansion sleeve comprises an inner sleeve, an outer sleeve and a power-assisted screw cap, wherein both the inner sleeve and the outer sleeve are provided with a pipe head end and a pipe tail end; the inner sleeve is hollow, the tube head end of the inner sleeve is of an outwards-expanded bell mouth structure, the outer wall of the tube tail end of the inner sleeve is provided with an external thread, and the power-assisted screw cap is provided with an internal thread matched with the external thread; the outer sleeve is hollow inside and sleeved outside the inner sleeve, the outer sleeve is provided with side holes, longitudinal notches are formed in the outer sleeve in an extending mode along the side holes towards the end of the tube head of the outer sleeve, expansion blades are formed on the tube wall between the longitudinal notches, and the inner sleeve is driven to move through the rotary power-assisted screw cap to enable the expansion blades to radially expand or close.
In the above technical solution, further, the length of the inner cannula is 10-20mm longer than the length of the outer cannula.
In the above technical solution, further, the inner dilating sleeve further comprises a positioning ring, and the positioning ring is connected with the outer sleeve.
In the above technical scheme, further, the outer sleeve pipe tail end is provided with a clamping groove, and the positioning ring is connected with the outer sleeve through the clamping groove.
In the above technical solution, further, the expansion angle of the expansion leaves is 5-45 °.
In the above technical solution, further, the outer diameter of the front end of the bell mouth is 13-15mm, and the length of the external thread is 40-60 mm.
In the above technical solution, further, the length of the longitudinal cut is 20-40 mm.
In the above technical solution, further, the outer diameter of the front end of the bell mouth is 3-5mm longer than the inner diameter of the outer sleeve.
In the above technical solution, further, the front end of the bell mouth is a guide inclined plane with a certain taper.
The working principle of the invention is as follows: the outer sleeve is sleeved outside the inner sleeve, when the power-assisted screw cap is rotated, the tube head end of the outer sleeve moves to the tube head end of the inner sleeve, the expansion leaves simultaneously expand radially in the moving process of the outer sleeve, when the tube head end of the outer sleeve reaches the tube head end of the inner sleeve, the power-assisted screw cap is continuously rotated to drive the inner sleeve to move to the tail end of the outer sleeve, and meanwhile, the expansion leaves of the outer sleeve further expand to enable the outer sleeve to generate expansion effect in vivo; when the power-assisted screw cap is reversely rotated, the inner sleeve moves towards the tube head end of the outer sleeve, and the expansion leaves of the outer sleeve are closed.
The invention has the beneficial effects that:
(1) in the endoscope operation process, on the premise of not enlarging a skin incision, the soft tissue around the operation space is expanded from the inside of the body to the periphery by using the internal expansion sleeve, so that the under-endoscope operation visual field can be expanded, the under-endoscope visual field shield of the soft tissue is reduced, and the enough operation space is provided under the endoscope.
(2) The invention expands from the body through the outer sleeve, extrudes soft tissues and compresses for hemostasis.
(3) The invention expands from the body through the outer sleeve, can generate automatic fixing function to the outer sleeve in the operation process, and prevents the outer sleeve from being deviated or pulled out.
Drawings
FIG. 1 is a schematic structural view of an inner expandable casing in which (a) is a perspective view; (b) is a front view, and (c) is an A-A sectional view;
FIG. 2 is a schematic structural view of the inner sleeve;
FIG. 3 is a schematic structural view of the outer sleeve;
fig. 4 is a schematic structural view of the power nut, in which (a) is a perspective view, (b) is a front view, and (c) is a top view;
fig. 5 is a schematic structural diagram of the positioning ring, in which (a) is a perspective view, (b) is a front view, and (c) is a top view.
Wherein: 1. an inner sleeve; 2. a tube head end of the inner sleeve; 3. the tail end of the inner sleeve; 4. an outer sleeve; 5. the tube head end of the outer sleeve; 6. the tube tail end of the outer sleeve; 7. a power-assisted screw cap; 8. a longitudinal cut; 9. a positioning ring; 10. expanding the leaves; 11. a card slot; 12. a bell mouth; 13. an external thread; 14. side holes.
Detailed Description
The following non-limiting examples are presented to enable those of ordinary skill in the art to more fully understand the present invention and are not intended to limit the invention in any way.
An inner expanding sleeve is structurally shown in figures 1-5 and comprises an inner sleeve 1, an outer sleeve 4 and a power-assisted screw cap 7, wherein both the inner sleeve 1 and the outer sleeve 4 are provided with a tube head end and a tube tail end, the inner sleeve 1 is hollow, the tube head end 2 of the inner sleeve 1 is in an outwardly expanding bell mouth 12 structure, the outer wall of the tube tail end 3 of the inner sleeve 1 is provided with an external thread 13, and the power-assisted screw cap 7 is provided with an internal thread matched with the external thread 13; the outer sleeve 4 is made of stainless steel materials which have good biocompatibility and ductility and do not contain harmful components to human bodies, the inner sleeve is hollow and sleeved outside the inner sleeve 1, the length of the inner sleeve 1 is 10-20mm longer than that of the outer sleeve 4, the outer sleeve 4 is provided with a side hole 14, a longitudinal cut 8 is arranged along the side hole 14 and extends towards the tube head end 5 of the outer sleeve, an expansion blade 10 is formed on the tube wall between the adjacent longitudinal cuts 8, and the inner sleeve 1 is driven to move by rotating the power-assisted screw cap 7 so that the expansion blade 10 radially expands or closes; the outer diameter of the front end of the bell mouth 12 is 13-15mm, the length of the external thread 13 is 40-60mm, and the length of the longitudinal cut 8 is 20-40mm, so that the expansion angle range of the expansion blade 10 is 5-45 degrees; the outer diameter of the front end of the bell mouth 12 is 3-5mm larger than the inner diameter of the outer sleeve 4; the inner expanding sleeve further comprises a positioning ring 9, a clamping groove 11 is formed in the tail end 6 of the outer sleeve 4, and the positioning ring 9 is connected with the outer sleeve 4 through the clamping groove 11 in the tail end 6 of the outer sleeve 4.
When the internal expansion sleeve is used, firstly, the inner sleeve 1 is inserted into a patient body along a guide tube or a guide rod, after the internal expansion sleeve reaches an operation target area, the outer sleeve 4 is sleeved outside the inner sleeve and is inserted into the patient body, the tube head end of the outer sleeve 4 moves towards the target area by rotating the power-assisted screw cap 7, the expansion leaves 10 expand radially simultaneously in the moving process of the outer sleeve 4, when the tube head end 5 of the outer sleeve 4 moves to be flush with the tube head end 2 of the inner sleeve 11, the outer sleeve 4 is fixed in the target area by the positioning ring 9, the power-assisted screw cap 7 is continuously rotated to drive the inner sleeve 1 to move towards the tube tail end 6 of the outer sleeve 4, and the expansion leaves 10 expand further simultaneously, so that the outer sleeve 4 generates an expansion effect in the body through the expansion leaves 10 to expand the visual field. After the operation is finished, the power-assisted screw cap 7 is rotated reversely, so that the inner sleeve 1 moves towards the tube head end 5 of the outer sleeve 4, the expansion leaves of the outer sleeve 4 are closed, the outer sleeve 4 is firstly pulled out of the body, and then the inner sleeve 1 is pulled out of the body.

Claims (9)

1. An internal expansion sleeve, comprising: the inner expansion sleeve comprises an inner sleeve (1), an outer sleeve (4) and a power-assisted screw cap (7), and both the inner sleeve (1) and the outer sleeve (4) are provided with a tube head end and a tube tail end;
the inner sleeve (1) is hollow, the tube head end (2) of the inner sleeve (1) is of an outwards-expanded bell mouth (12) structure, an external thread (13) is arranged on the outer wall of the tube tail end (3) of the inner sleeve (1), and an internal thread matched with the external thread is arranged on the power-assisted screw cap (7);
the utility model discloses a pipe joint, including outer tube (4), outer tube (4) inside cavity, the suit is provided with side opening (14) outside interior sleeve pipe (1) on outer tube (4), extends along side opening (14) to the tube head end (5) of outer tube (4) and is provided with vertical incision (8), and the pipe wall between adjacent vertical incision (8) forms expansion leaf (10), drives interior sleeve pipe (1) through rotatory helping hand nut (7) and removes messenger expansion leaf (10) to radial expansion or closure.
2. The inner expandable sleeve according to claim 1, wherein: the length of the inner sleeve (1) is 10-20mm longer than that of the outer sleeve (4).
3. The inner expandable sleeve according to claim 2, wherein: the inner expanding sleeve further comprises a positioning ring (9), and the positioning ring (9) is connected with the outer sleeve (4).
4. The inner expandable sleeve according to claim 3, wherein: the outer sleeve (4) is provided with a clamping groove (11) at the tail end (6), and the positioning ring (9) is connected with the outer sleeve (4) through the clamping groove (11).
5. The inner expandable sleeve according to claim 4, wherein: the expansion angle of the expansion blade (10) is 5-45 degrees.
6. The inner expandable sleeve according to claim 5, wherein: the outer diameter of the front end of the bell mouth (12) is 13-15mm, and the length of the external thread (13) is 40-60 mm.
7. The inner expandable sleeve according to claim 6, wherein: the length of the longitudinal cut (8) is 20-40 mm.
8. The inner expandable sleeve according to claim 7, wherein: the outer diameter of the front end of the bell mouth (12) is 3-5mm longer than the inner diameter of the outer sleeve (4).
9. The inner expandable sleeve according to claim 8, wherein: the front end of the bell mouth (12) is a guide inclined plane with a certain taper.
CN202110077531.0A 2021-01-20 2021-01-20 Internal expanding sleeve Pending CN112754553A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110077531.0A CN112754553A (en) 2021-01-20 2021-01-20 Internal expanding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110077531.0A CN112754553A (en) 2021-01-20 2021-01-20 Internal expanding sleeve

Publications (1)

Publication Number Publication Date
CN112754553A true CN112754553A (en) 2021-05-07

Family

ID=75701884

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110077531.0A Pending CN112754553A (en) 2021-01-20 2021-01-20 Internal expanding sleeve

Country Status (1)

Country Link
CN (1) CN112754553A (en)

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