CN111437016A - Rotary type medical endoscope lower injection device - Google Patents
Rotary type medical endoscope lower injection device Download PDFInfo
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- CN111437016A CN111437016A CN202010447012.4A CN202010447012A CN111437016A CN 111437016 A CN111437016 A CN 111437016A CN 202010447012 A CN202010447012 A CN 202010447012A CN 111437016 A CN111437016 A CN 111437016A
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- 238000002347 injection Methods 0.000 title claims abstract description 82
- 239000007924 injection Substances 0.000 title claims abstract description 82
- 239000000463 material Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- 230000000451 tissue damage Effects 0.000 claims description 6
- 231100000827 tissue damage Toxicity 0.000 claims description 6
- 238000001574 biopsy Methods 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims 1
- 238000003780 insertion Methods 0.000 abstract description 8
- 230000037431 insertion Effects 0.000 abstract description 8
- 230000000740 bleeding effect Effects 0.000 abstract description 3
- 210000004877 mucosa Anatomy 0.000 abstract description 2
- 210000001519 tissue Anatomy 0.000 description 22
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010999 medical injection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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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
- A61B17/3478—Endoscopic needles, e.g. for infusion
-
- 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
- A61B17/3403—Needle locating or guiding means
-
- 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
-
- 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
- A61B17/3496—Protecting sleeves or inner probes; Retractable tips
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- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention belongs to the field of medical instruments, and particularly relates to a rotary type medical endoscopic lower injection device. The injection needle sheath which can axially rotate and move and has the back slope of 45 degrees is arranged in the injection device under the medical endoscope, so that after the needle tube sleeve is clamped with the sheath, the needle tube sleeve and the sheath can be directly driven to axially rotate together by rotating the tail handle or driving the needle tube sleeve and the sheath to axially rotate through the inhaul cable, an operator can conveniently adjust the puncture angle by observing the positioning mark position on the front surface of the sheath through the display screen of the endoscope, puncture is carried out when the mark is positioned in the center, the needle insertion angle of the injection needle can be accurately controlled to be 45-degree oblique puncture, the effective depth and safety of puncture injection are ensured, the treatment risk caused by overlarge or undersize needle insertion angle and the operation difficulty is reduced, the situations of bleeding, perforation or overlook depth and the like are effectively avoided, and the treatment purpose of injection under the endoscope under the mucosa. Thus, the injection device of the present invention is well suited for the present clinical needs.
Description
Technical Field
The invention belongs to the field of medical instruments, and particularly relates to a rotary type medical endoscopic lower injection device.
Background
The common endoscope injection needle has certain treatment risks, in order to better achieve the purpose of submucosal injection, the needle inserting angle is preferably 45-degree oblique puncture, the needle is very easy to puncture deeply to cause bleeding or perforation when vertically puncturing, and the needle is easy to puncture too shallowly to achieve the purpose of submucosal injection when parallelly puncturing.
The injection under the endoscope is usually operated remotely, and there is a certain difficulty and inconvenience in controlling the needle puncturing angle by operating the doctor to adjust the endoscope body, so how to provide the injection under the endoscope capable of accurately controlling the puncturing angle becomes a technical problem to be solved urgently by the technical staff in the field.
Disclosure of Invention
In order to overcome the defects of the existing injection needle under the endoscope, the invention improves and optimizes the structure of the injection needle and prepares a rotary medical injection device under the endoscope. According to the rotary type medical endoscope lower injection device, the injection needle sheath which can axially rotate and move and has the slope of 45 degrees and the corresponding mechanical linkage device are arranged at the front end of the outer tube, when the tail handle is rotated, the sheath is driven to axially rotate so as to adjust the puncture angle, the needle insertion angle of the injection needle is accurately controlled to be 45 degrees, the effective depth and safety of puncture injection are ensured, and the treatment purpose of mucosa injection under the endoscope is better realized.
The invention relates to a rotary type medical endoscopic injection device, which comprises a front handle component 1 and a rear handle component 2, wherein:
the front handle assembly 1 comprises a handle body 3 and an outer tube 4 connected with the handle body 3, wherein the front end of the outer tube 4 is connected with a sheath 5 which can axially rotate and move;
the rear handle assembly 2 comprises a tail handle 6, a three-way handle 7 and an inner tube 8 connected with the three-way handle 7, the other end of the inner tube 8 is sequentially connected with a needle tube sleeve 9 and a puncture needle 10, and the three-way handle 7 comprises a side passage 11 and a main passage 12;
the inner tube 8 is positioned inside the outer tube 4, the needle tube sleeve 9 and the puncture needle head 10 are positioned inside the three-way handle 7 and the inner tube 8 and are in clearance fit with the inner tube 8, the puncture needle head 10 is connected and matched with the needle tube sleeve 9, and the clearance among the needle tube sleeve 9, the puncture needle head 10 and the inner tube 8 is communicated with a side passage 11 of the three-way handle 7;
a limiting block 14 is arranged on the side surface of the inner tube 8 in the handle body 3 to limit the telescopic distance of the puncture needle head 10, when tissues are punctured, the tail handle 6 is pushed forwards, and the limiting block 14 abuts against the front end of the interior of the handle body 3 to prevent the needle outlet distance from being too long; when the injection is finished, the tail handle 6 is pulled back, the limiting block 14 is propped against the inner rear end of the handle body 3, the inner tube 8 is prevented from being pulled out too much, and the puncture needle head 10 moves in a limited range;
the inner tube 8 and the needle tube sleeve 9 can be driven to rotate by axially rotating the tail handle 6;
the sheath 5 is of an internal hollow structure, an annular sliding groove 15 is formed in the outer part of the sheath, which is close to the end of the outer tube 4, and the sheath 5 can freely rotate axially by means of the loose connection between a lug 16 at the far end of the outer tube 4 and the outer tube 4; four lugs 17 are uniformly distributed in the sheath 5; the outer part of the needle tube sleeve 9 is uniformly provided with guide through grooves 19 with four arc-shaped inclined surfaces 18, when the rear handle assembly 2 is pushed forwards, the needle tube sleeve 9 moves forwards, the lug 17 in the sheath 5 slides along the arc-shaped inclined surfaces 18 of the guide through grooves 19 and is finally clamped with the guide through grooves 19, and meanwhile, the puncture needle head 10 extends out of a through hole 20 in the sheath 5 to carry out tissue puncture operation; when the rear handle assembly 2 is pulled backwards, the lug 17 slides out of the guide through groove 19, the puncture needle head 10 retracts from the through hole 20, and the puncture operation is completed; when the lug 17 is clamped with the guide through groove 19, the tail handle 6 is axially rotated, and then the needle cannula sleeve 9 is driven to rotate, so that the sheath 5 rotates;
the puncture needle head 10 is connected with the needle tube sleeve 9 and is communicated with the inner tube 8 through the inclined needle tube sleeve through hole 22, when the injector is connected with the side passage 11 of the three-way handle 7 and is injected, the tissue injection operation can be carried out.
Furthermore, in the rotary medical endoscopic injection device, the slope of the back surface of the sheath 5 is 45 degrees, and the positioning mark 21 is arranged on the front surface of the sheath, so that the position of the positioning mark 21 can be observed through an endoscopic display screen to determine the puncture angle; during the puncture operation, the back of the sheath 5 is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45 degrees for oblique puncture.
Furthermore, the front end of the sheath 5 in the rotary type medical under-endoscope injection device is designed to be an arc obtuse angle, so that tissue damage is avoided when the puncture angle is fixed.
Preferably, the inner tube 8, the outer tube 4 and the sheath 5 in the above rotary type medical endoscopic injection device are made of a polytetrafluoroethylene material.
In addition, the invention also provides a use method of the rotary type medical endoscopic injection device, which comprises the following specific operation flows: the injection device is inserted into an endoscope biopsy hole channel, the tissue of an operation part is aligned under the guidance of a display screen, a rear handle component 2 is pushed forwards, a lug 17 in a sheath 5 is clamped with a guide through groove 19 outside a needle tube sleeve 9, a puncture needle head 10 extends out of a through hole 20 of the sheath 5, a tail handle 6 is axially rotated to drive the sheath 5 to rotate, the position of a positioning mark 21 on the front surface of the sheath 5 is observed through an endoscope display screen to determine a puncture angle, when the positioning mark 21 is positioned in the center, the back surface of the sheath 5 is completely attached to the tissue for puncture operation, namely, the needle insertion angle can be controlled to be 45-degree oblique puncture, at the moment, an injector is connected to a side passage 11 of a three-way handle 7 and is injected for tissue injection operation, after the operation is finished, the rear handle component 2 is pulled backwards, the lug 17 in the sheath 5 slides out of the guide through groove 19, and the puncture needle head 10 retracts from, the injection operation is completed.
Preferably, the rotary medical endoscopic injection device of the invention can be further improved, wherein a pull rope 13 is further arranged inside the inner tube 8 in the rear handle assembly 2, the pull rope 13, the needle tube sleeve 9 and the puncture needle 10 are positioned inside the three-way handle 7 and the inner tube 8 and are in clearance fit with the inner tube 8, the puncture needle 10 is connected and matched with the needle tube sleeve 9, and the gaps among the pull rope 13, the needle tube sleeve 9, the puncture needle 10 and the inner tube 8 are communicated with the side passage 11 of the three-way handle 7;
the proximal end of the inhaul cable 13 is fixedly connected with the tail handle 6, the distal end of the inhaul cable is connected with the needle tube sleeve 9, and the inhaul cable 13 can be driven to rotate by axially rotating the tail handle 6, so that the inner tube 8 and the needle tube sleeve 9 are driven to rotate; when the lug 17 is clamped with the guide through groove 19, the tail handle 6 is axially rotated, and then the needle tube sleeve 9 is rotated through the inhaul cable 13, so that the protective sleeve 5 is driven to rotate.
Furthermore, in the rotary medical endoscopic injection device, the slope of the back surface of the sheath 5 is 45 degrees, and the positioning mark 21 is arranged on the front surface of the sheath, so that the position of the positioning mark 21 can be observed through an endoscopic display screen to determine the puncture angle; during the puncture operation, the back of the sheath 5 is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45 degrees for oblique puncture.
Furthermore, the front end of the sheath 5 in the rotary type medical under-endoscope injection device is designed to be an arc obtuse angle, so that tissue damage is avoided when the puncture angle is fixed.
Preferably, the inner tube 8, the outer tube 4 and the sheath 5 in the above rotary type medical endoscopic injection device are made of a polytetrafluoroethylene material.
In summary, the injection needle sheath which can axially rotate and move and has the slope of 45 degrees at the back is arranged in the injection device under the medical endoscope, so that after the needle sheath is clamped with the sheath, the needle sheath and the sheath can be directly driven to axially rotate together by rotating the tail handle or by a pull rope, an operator can conveniently adjust the puncture angle by observing the positioning mark position on the front of the sheath through the display screen of the endoscope, puncture is carried out when the mark is positioned in the center, the needle insertion angle of the injection needle can be accurately controlled to be 45-degree oblique puncture, the effective depth and safety of puncture injection are ensured, the treatment risks caused by overlarge or undersize needle insertion angle and the operation difficulty are reduced, the situations of bleeding, perforation or overlook depth and the like are effectively avoided, and the treatment purpose of submucosal injection under the endoscope can be better realized. Therefore, the rotary type medical endoscopic injection device is very suitable for the current clinical needs.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art are briefly introduced below, it is obvious that the drawings in the following description are only specific embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without creative efforts.
Fig. 1 is a general cross-sectional view of the injection device of the present invention.
Fig. 2 is a schematic view of the external structure of the injection device of the present invention.
Fig. 3 is a schematic view of the front handle assembly of the injection device of the present invention.
Fig. 4 is a schematic view of the rear handle assembly of the injection device of the present invention.
Fig. 5 is a schematic view of the internal structure of the sheath of the injection device of the present invention.
Fig. 6 is a schematic front view of a sheath of an injection device of the present invention.
Fig. 7 is a schematic view of the structure of the needle hub of the injection device of the present invention.
Fig. 8 is a general cross-sectional view of a modified injection device of the present invention (with the addition of a cable arrangement).
Fig. 9 is a schematic view of a modified injection device of the present invention with the addition of a pull cable arrangement showing the handle assembly.
Fig. 10 is a schematic view of a modified syringe device of the present invention (with the addition of a pull cable arrangement) showing the configuration of the needle hub.
Labeled as: 1-front handle component, 2-rear handle component, 3-handle body, 4-outer tube, 5-sheath, 6-tail handle, 7-three-way handle, 8-inner tube, 9-needle sleeve, 10-puncture needle, 11-side channel, 12-main channel, 13-inhaul cable, 14-limiting block, 15-annular chute, 16-lug, 17-lug, 18-arc bevel, 19-guide through groove, 20-through hole, 21-positioning mark and 22-needle sleeve through hole.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Before the present embodiments are further described, it is to be understood that the scope of the invention is not limited to the particular embodiments described below; it is also to be understood that the terminology used in the examples is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the present invention.
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 invention belongs. In addition to the specific methods, devices, and materials used in the examples, any methods, devices, and materials similar or equivalent to those described in the examples may be used in the practice of the invention in addition to the specific methods, devices, and materials used in the examples, in keeping with the knowledge of one skilled in the art and with the description of the invention.
In the present invention, all devices and materials are commercially available or commonly used in the art, unless otherwise specified. The methods in the following examples are conventional in the art unless otherwise specified.
Example 1
A rotary medical endoscopic injection device (see fig. 1-7), comprising in particular a front handle assembly 1 and a rear handle assembly 2, wherein:
the front handle assembly 1 comprises a handle body 3 and an outer tube 4 connected with the handle body 3, wherein the front end of the outer tube 4 is connected with a sheath 5 which can axially rotate and move; the slope of the back of the sheath 5 is 45 degrees, and the positioning mark 21 is arranged on the front of the sheath, so that the position of the positioning mark 21 can be observed through an endoscope display screen to determine the puncture angle; during puncture operation, the back surface of the sheath 5 is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45-degree oblique puncture; in order to avoid tissue damage caused by fixing the puncture angle, the front end of the sheath 5 is designed to be an arc obtuse angle;
the rear handle assembly 2 comprises a tail handle 6, a three-way handle 7 and an inner tube 8 connected with the three-way handle 7, the other end of the inner tube 8 is sequentially connected with a needle tube sleeve 9 and a puncture needle 10, and the three-way handle 7 comprises a side passage 11 and a main passage 12;
the inner tube 8 is positioned inside the outer tube 4, the needle tube sleeve 9 and the puncture needle head 10 are positioned inside the three-way handle 7 and the inner tube 8 and are in clearance fit with the inner tube 8, the puncture needle head 10 is connected and matched with the needle tube sleeve 9, and the clearance among the needle tube sleeve 9, the puncture needle head 10 and the inner tube 8 is communicated with a side passage 11 of the three-way handle 7;
a limiting block 14 is arranged on the side surface of the inner tube 8 in the handle body 3 to limit the telescopic distance of the puncture needle head 10, when tissues are punctured, the tail handle 6 is pushed forwards, and the limiting block 14 abuts against the front end of the interior of the handle body 3 to prevent the needle outlet distance from being too long; when the injection is finished, the tail handle 6 is pulled back, the limiting block 14 is propped against the inner rear end of the handle body 3, the inner tube 8 is prevented from being pulled out too much, and the puncture needle head 10 moves in a limited range;
the inner tube 8 and the needle tube sleeve 9 can be driven to rotate by axially rotating the tail handle 6;
the sheath 5 is of an internal hollow structure, an annular sliding groove 15 is formed in the outer part of the sheath, which is close to the end of the outer tube 4, and the sheath 5 can freely rotate axially by means of the loose connection between a lug 16 at the far end of the outer tube 4 and the outer tube 4; four lugs 17 are uniformly distributed in the sheath 5; the outer part of the needle tube sleeve 9 is uniformly provided with guide through grooves 19 with four arc-shaped inclined surfaces 18, when the rear handle assembly 2 is pushed forwards, the needle tube sleeve 9 moves forwards, the lug 17 in the sheath 5 slides along the arc-shaped inclined surfaces 18 of the guide through grooves 19 and is finally clamped with the guide through grooves 19, and meanwhile, the puncture needle head 10 extends out of a through hole 20 in the sheath 5 to carry out tissue puncture operation; when the rear handle assembly 2 is pulled backwards, the lug 17 slides out of the guide through groove 19, the puncture needle head 10 retracts from the through hole 20, and the puncture operation is completed; when the lug 17 is clamped with the guide through groove 19, the tail handle 6 is axially rotated, and then the needle cannula sleeve 9 is driven to rotate, so that the sheath 5 rotates;
the puncture needle head 10 is connected with the needle tube sleeve 9 and is communicated with the inner tube 8 through the inclined needle tube sleeve through hole 22, when the injector is connected with the side passage 11 of the three-way handle 7 and is injected, the tissue injection operation can be carried out.
The inner tube 8, the outer tube 4 and the sheath 5 in the above rotary medical endoscopic injection device are made of polytetrafluoroethylene materials.
The use method of the rotary medical endoscopic injection device comprises the following specific operation processes: the injection device is inserted into an endoscope biopsy hole channel, the tissue of an operation part is aligned under the guidance of a display screen, a rear handle component 2 is pushed forwards, a lug 17 in a sheath 5 is clamped with a guide through groove 19 outside a needle tube sleeve 9, a puncture needle head 10 extends out of a through hole 20 of the sheath 5, a tail handle 6 is axially rotated to drive the sheath 5 to rotate, the position of a positioning mark 21 on the front surface of the sheath 5 is observed through an endoscope display screen to determine a puncture angle, when the positioning mark 21 is positioned in the center, the back surface of the sheath 5 is completely attached to the tissue for puncture operation, namely, the needle insertion angle can be controlled to be 45-degree oblique puncture, at the moment, an injector is connected to a side passage 11 of a three-way handle 7 and is injected for tissue injection operation, after the operation is finished, the rear handle component 2 is pulled backwards, the lug 17 in the sheath 5 slides out of the guide through groove 19, and the puncture needle head 10 retracts from, the injection operation is completed.
Example 2
A rotary medical endoscopic injection device (see fig. 2, 3, 5, 6, 8, 9, 10), comprising in particular a front handle assembly 1 and a rear handle assembly 2, wherein:
the front handle assembly 1 comprises a handle body 3 and an outer tube 4 connected with the handle body 3, wherein the front end of the outer tube 4 is connected with a sheath 5 which can axially rotate and move; the slope of the back of the sheath 5 is 45 degrees, and the positioning mark 21 is arranged on the front of the sheath, so that the position of the positioning mark 21 can be observed through an endoscope display screen to determine the puncture angle; during puncture operation, the back surface of the sheath 5 is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45-degree oblique puncture; in order to avoid tissue damage caused by fixing the puncture angle, the front end of the sheath 5 is designed to be an arc obtuse angle;
the rear handle assembly 2 comprises a tail handle 6, a three-way handle 7 and an inner tube 8 connected with the three-way handle 7, the other end of the inner tube 8 is sequentially connected with a needle tube sleeve 9 and a puncture needle 10, and the three-way handle 7 comprises a side passage 11 and a main passage 12;
the inner tube 8 is positioned inside the outer tube 4, a pull rope 13 is also arranged inside the inner tube 8, the pull rope 13, the needle tube sleeve 9 and the puncture needle head 10 are positioned inside the three-way handle 7 and the inner tube 8 and are in clearance fit with the inner tube 8, the puncture needle head 10 is connected and matched with the needle tube sleeve 9, and the gaps among the pull rope 13, the needle tube sleeve 9, the puncture needle head 10 and the inner tube 8 are communicated with a side passage 11 of the three-way handle 7;
the proximal end of the inhaul cable 13 is fixedly connected with the tail handle 6, the distal end of the inhaul cable is connected with the needle tube sleeve 9, and the inhaul cable 13 can be driven to rotate by axially rotating the tail handle 6, so that the inner tube 8 and the needle tube sleeve 9 are driven to rotate; when the lug 17 is clamped with the guide through groove 19, the tail handle 6 is axially rotated, and then the needle tube sleeve 9 is rotated through the inhaul cable 13, so that the protective sleeve 5 is driven to rotate;
a limiting block 14 is arranged on the side surface of the inner tube 8 in the handle body 3 to limit the telescopic distance of the puncture needle head 10, when tissues are punctured, the tail handle 6 is pushed forwards, and the limiting block 14 abuts against the front end of the interior of the handle body 3 to prevent the needle outlet distance from being too long; when the injection is finished, the tail handle 6 is pulled back, the limiting block 14 is propped against the inner rear end of the handle body 3, the inner tube 8 is prevented from being pulled out too much, and the puncture needle head 10 moves in a limited range;
the sheath 5 is of an internal hollow structure, an annular sliding groove 15 is formed in the outer part of the sheath, which is close to the end of the outer tube 4, and the sheath 5 can freely rotate axially by means of the loose connection between a lug 16 at the far end of the outer tube 4 and the outer tube 4; four lugs 17 are uniformly distributed in the sheath 5; the outer part of the needle tube sleeve 9 is uniformly provided with guide through grooves 19 with four arc-shaped inclined surfaces 18, when the rear handle assembly 2 is pushed forwards, the needle tube sleeve 9 moves forwards, the lug 17 in the sheath 5 slides along the arc-shaped inclined surfaces 18 of the guide through grooves 19 and is finally clamped with the guide through grooves 19, and meanwhile, the puncture needle head 10 extends out of a through hole 20 in the sheath 5 to carry out tissue puncture operation; when the rear handle assembly 2 is pulled backwards, the lug 17 slides out of the guide through groove 19, the puncture needle head 10 retracts from the through hole 20, and the puncture operation is completed; when the lug 17 is clamped with the guide through groove 19, the tail handle 6 is axially rotated, and then the needle tube sleeve 9 is rotated through the inhaul cable 13, so that the protective sleeve 5 is driven to rotate;
the puncture needle head 10 is connected with the needle tube sleeve 9 and is communicated with the inner tube 8 through the inclined needle tube sleeve through hole 22, when the injector is connected with the side passage 11 of the three-way handle 7 and is injected, the tissue injection operation can be carried out.
The inner tube 8, the outer tube 4 and the sheath 5 in the above rotary medical endoscopic injection device are made of polytetrafluoroethylene materials.
The use method of the rotary medical endoscopic injection device comprises the following specific operation processes: the injection device is inserted into an endoscope biopsy hole channel, the tissue of an operation part is aligned under the guidance of a display screen, a rear handle component 2 is pushed forwards, a lug 17 in a sheath 5 is clamped with a guide through groove 19 outside a needle tube sleeve 9, a puncture needle head 10 extends out of a through hole 20 of the sheath 5, a tail handle 6 is axially rotated to drive the sheath 5 to rotate, the position of a positioning mark 21 on the front surface of the sheath 5 is observed through an endoscope display screen to determine a puncture angle, when the positioning mark 21 is positioned in the center, the back surface of the sheath 5 is completely attached to the tissue for puncture operation, namely, the needle insertion angle can be controlled to be 45-degree oblique puncture, at the moment, an injector is connected to a side passage 11 of a three-way handle 7 and is injected for tissue injection operation, after the operation is finished, the rear handle component 2 is pulled backwards, the lug 17 in the sheath 5 slides out of the guide through groove 19, and the puncture needle head 10 retracts from, the injection operation is completed.
While the preferred embodiments and examples of the present invention have been described in detail, the present invention is not limited to the embodiments and examples, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (9)
1. A rotary medical endoscopic injection device, comprising a front handle assembly (1) and a rear handle assembly (2), characterized in that:
the front handle assembly (1) comprises a handle body (3) and an outer tube (4) connected with the handle body (3), and the front end of the outer tube (4) is connected with a sheath (5) which can axially rotate and move;
the rear handle assembly (2) comprises a tail handle (6), a three-way handle (7) and an inner tube (8) connected with the three-way handle (7), the other end of the inner tube (8) is sequentially connected with a needle tube sleeve (9) and a puncture needle (10), and the three-way handle (7) comprises a side passage (11) and a main passage (12);
the inner tube (8) is positioned inside the outer tube (4), the needle tube sleeve (9) and the puncture needle head (10) are positioned inside the three-way handle (7) and the inner tube (8) and are in clearance fit with the inner tube (8), the puncture needle head (10) is connected and matched with the needle tube sleeve (9), and the clearances of the needle tube sleeve (9), the puncture needle head (10) and the inner tube (8) are communicated with a side passage (11) of the three-way handle (7);
a limiting block (14) is arranged on the side surface of the inner tube (8) in the handle body (3) to limit the telescopic distance of the puncture needle head (10), when tissues are punctured, the tail handle (6) is pushed forwards, and the limiting block (14) is propped against the front end inside the handle body (3) to prevent the needle outlet distance from being too long; when the injection is finished, the tail handle (6) is pulled back, the limiting block (14) props against the inner rear end of the handle body (3) to prevent the inner tube (8) from being pulled out too much, so that the puncture needle head (10) moves in a limited range;
the inner tube (8) and the needle tube sleeve (9) can be driven to rotate by axially rotating the tail handle (6);
the sheath (5) is of an internal hollow structure, an annular sliding groove (15) is formed in the outer part of the sheath close to the outer pipe (4), and the sheath (5) can freely axially rotate by means of the loose connection between a lug (16) at the far end of the outer pipe (4) and the outer pipe (4); four lugs (17) are uniformly distributed in the sheath (5); the outer part of the needle tube sleeve (9) is uniformly provided with guide through grooves (19) with four arc-shaped inclined surfaces (18), when the rear handle assembly (2) is pushed forwards, the needle tube sleeve (9) moves forwards, the bump (17) in the sheath (5) slides along the arc-shaped inclined surfaces (18) of the guide through grooves (19) and is finally clamped with the guide through grooves (19), and meanwhile, the puncture needle head (10) extends out of a through hole (20) in the sheath (5) to perform tissue puncture operation; when the rear handle assembly (2) is pulled backwards, the lug (17) slides out of the guide through groove (19), the puncture needle head (10) retracts from the through hole (20), and the puncture operation is finished; when the lug (17) is clamped with the guide through groove (19), the tail handle (6) is axially rotated, and then the needle tube sleeve (9) is driven to rotate, so that the sheath (5) rotates;
the puncture needle head (10) is connected with the needle tube sleeve (9) and is communicated with the inner tube (8) through the inclined needle tube sleeve through hole (22), and when the injector is connected with the side passage (11) of the three-way handle (7) and injected, the tissue injection operation can be carried out.
2. A rotary medical endo-injector apparatus as set forth in claim 1 wherein: the slope of the back of the sheath (5) is 45 degrees, and the positioning mark (21) is arranged on the front of the sheath, so that the position of the positioning mark (21) can be observed through an endoscope display screen to determine the puncture angle; during the puncture operation, the back surface of the sheath (5) is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45 degrees for oblique puncture.
3. A rotary medical endo-scopic injection device as recited in claim 1 or 2, wherein: the front end of the sheath (5) is designed to be an arc obtuse angle so as to avoid tissue damage when the puncture angle is fixed.
4. A rotary medical endo-injector apparatus as set forth in claim 1 wherein: the inner pipe (8), the outer pipe (4) and the sheath (5) are made of polytetrafluoroethylene materials.
5. The use method of the rotary medical endoscope lower injection device according to claim 1, the concrete operation flow is as follows: the injection device is inserted into an endoscope biopsy pore passage, the tissue of an operation part is aligned under the guidance of a display screen, a rear handle component (2) is pushed forwards, a lug (17) in a sheath (5) is clamped with a guide through groove (19) outside a needle tube sleeve (9), a puncture needle head (10) extends out of a through hole (20) of the sheath (5), a tail handle (6) is axially rotated to drive the sheath (5) to rotate, the puncture angle is determined by observing the position of a positioning mark (21) on the front surface of the sheath (5) through an endoscope display screen, when the positioning mark (21) is positioned in the center, the back surface of the sheath (5) is completely attached to the tissue for puncture operation, namely, the needle entering angle can be controlled to be 45-degree oblique puncture, at the moment, an injector is connected to a side passage (11) of a three-way handle (7) and is injected for tissue injection operation, after the operation is finished, the rear handle component (2) is pulled backwards, the lug (17) in the sheath (5) slides out of the guide through groove (19), and the puncture needle head (10) retracts from the through hole (20) to finish the injection operation.
6. A rotary medical endo-injector apparatus as set forth in claim 1 wherein:
a pull rope (13) is further arranged inside the inner tube (8) in the rear handle assembly (2), the pull rope (13), the needle tube sleeve (9) and the puncture needle head (10) are located inside the three-way handle (7) and the inner tube (8) and are in clearance fit with the inner tube (8), the puncture needle head (10) is connected and matched with the needle tube sleeve (9), and the pull rope (13), the needle tube sleeve (9), the puncture needle head (10) and the inner tube (8) are in clearance communication with a side passage (11) of the three-way handle (7);
the proximal end of the inhaul cable (13) is fixedly connected with the tail handle (6), the distal end of the inhaul cable is connected with the needle tube sleeve (9), and the inhaul cable (13) can be driven to rotate by axially rotating the tail handle (6), so that the inner tube (8) and the needle tube sleeve (9) are driven to rotate; when the lug (17) is clamped with the guide through groove (19), the tail handle (6) is axially rotated, and then the needle tube sleeve (9) is rotated through the inhaul cable (13), so that the protective sleeve (5) is driven to rotate.
7. A rotary medical endo-injector apparatus as set forth in claim 6 wherein: the slope of the back of the sheath (5) is 45 degrees, and the positioning mark (21) is arranged on the front of the sheath, so that the position of the positioning mark (21) can be observed through an endoscope display screen to determine the puncture angle; during the puncture operation, the back surface of the sheath (5) is completely attached to the tissue, namely the needle inserting angle of the injection needle can be controlled to be 45 degrees for oblique puncture.
8. A rotary medical endo-scopic injection device as defined in claim 6 or 7 wherein: the front end of the sheath (5) is designed to be an arc obtuse angle so as to avoid tissue damage when the puncture angle is fixed.
9. A rotary medical endo-injector apparatus as set forth in claim 6 wherein: the inner pipe (8), the outer pipe (4) and the sheath (5) are made of polytetrafluoroethylene materials.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447012.4A CN111437016B (en) | 2020-05-25 | 2020-05-25 | Rotary medical endoscope lower injection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447012.4A CN111437016B (en) | 2020-05-25 | 2020-05-25 | Rotary medical endoscope lower injection device |
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| CN111437016A true CN111437016A (en) | 2020-07-24 |
| CN111437016B CN111437016B (en) | 2024-08-20 |
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| CN111904562A (en) * | 2020-09-15 | 2020-11-10 | 王勇 | Cystoscope submucosal injection needle |
| CN111973287A (en) * | 2020-08-26 | 2020-11-24 | 朱纪文 | Disposable mammary gland puncture positioning needle |
| CN118340568A (en) * | 2024-06-17 | 2024-07-16 | 四川省肿瘤医院 | Needle head with adjustable angle under endoscope and injection device |
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|---|---|
| CN111437016B (en) | 2024-08-20 |
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