CN212281563U - Rotary type medical endoscope lower injection device - Google Patents
Rotary type medical endoscope lower injection device Download PDFInfo
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- CN212281563U CN212281563U CN202020889055.3U CN202020889055U CN212281563U CN 212281563 U CN212281563 U CN 212281563U CN 202020889055 U CN202020889055 U CN 202020889055U CN 212281563 U CN212281563 U CN 212281563U
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Abstract
The utility model belongs to the field of medical equipment, especially, relate to a injection apparatus under medical endoscope of rotation type. The utility model discloses a but set up the back slope of axial rotation activity in injection apparatus under medical endoscope and be 45 degrees syringe needle sheath, make syringe needle cover and sheath joint back, can directly or drive syringe needle cover and sheath axial rotation together through the cable during rotatory afterbody handle, the operator observes the positive location sign position of sheath through the display screen and can conveniently adjust the puncture angle, puncture when the sign is located the centre, but the accurate control syringe needle angle of penetrating is 45 degrees sprints, ensure the effective degree of depth and the safety of puncture injection, thereby the treatment risk that the operation degree of difficulty and the too big or undersize of income needle angle brought has been reduced, effectively avoided bleeding, the emergence of the condition such as the perforation or puncture depth is too shallow, can realize the treatment purpose of the injection under the endoscope better. Therefore, the injection device of the utility model is very suitable for the clinical needs at present.
Description
Technical Field
The utility model belongs to the field of medical equipment, especially, relate to a injection apparatus under medical endoscope of rotation type.
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.
SUMMERY OF THE UTILITY MODEL
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. The utility model discloses injection device is for the syringe needle sheath and corresponding mechanical linkage of 45 degrees through the slope that sets up the axial rotation activity at the outer tube front end, thereby drives the sheath axial when rotatory afterbody handle simultaneously and rotates and adjust the puncture angle, and accurate control syringe needle angle of entry is 45 degrees oblique stabs, ensures the effective degree of depth and the safety of puncture injection, realizes the treatment purpose of mucosa injection under the endoscope better.
The utility model discloses injection apparatus under medical endoscope of rotation type, including preceding handle components 1 and back handle components 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.
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.
Preferably, the rotary type medical endoscope lower injection device of the utility model can be further improved as follows, wherein a guy cable 13 is arranged inside the inner tube 8 in the rear handle component 2, the guy cable 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 guy cable 13, the needle tube sleeve 9, the puncture needle head 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.
To sum up, the utility model discloses a but set up the back slope of axial rotation activity for 45 degrees syringe needle sheaths in injection apparatus under medical endoscope, make syringe needle cover and sheath joint back, can directly or drive syringe needle cover and sheath axial rotation together through the cable during rotatory afterbody handle, the operator observes the positive location sign position of sheath through the endoscope display screen and can conveniently adjust the puncture angle, puncture when the sign is located the centre, but accurate control syringe needle entry angle is 45 degrees oblique stings, ensure the effective degree of depth and the safety of puncture injection, thereby reduced the operation degree of difficulty and the treatment risk that the too big or undersize of entering needle angle brought, effectively avoided the hemorrhage, the emergence of the condition such as the perforation or puncture depth is too shallow, can realize the treatment purpose of injection under the endoscope better. Therefore, the rotary type injection device under the medical endoscope is very suitable for the current clinical needs.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the 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.
Figure 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 structural view of the front handle assembly of the injection device of the present invention.
Fig. 4 is a schematic view of the structure 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.
Figure 6 is a schematic front view of the sheath of the injection device of the present invention.
Fig. 7 is a schematic structural view of the syringe sleeve of the injection device of the present invention.
Figure 8 is a general cross-sectional view of the improved injection device of the present invention (with the addition of a cable arrangement).
Fig. 9 is a structural schematic view of a modified rear handle assembly of the injection device (with additional cable arrangement).
Fig. 10 is a structural schematic view of the improved syringe sleeve (with the addition of the cable) of the present invention.
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 following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit 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 of the present invention 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 of the present invention may be used in accordance with the understanding of the present invention by those skilled in the art and the description of the present invention.
In the present invention, all the devices and materials are commercially available or commonly used in the industry 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 and scope of the present invention.
Claims (8)
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. 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.
6. A rotary medical endo-injector apparatus as set forth in claim 5 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.
7. A rotary medical endo-scopic injection device as recited in claim 5 or 6, 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.
8. A rotary medical endo-injector apparatus as set forth in claim 5 wherein: the inner pipe (8), the outer pipe (4) and the sheath (5) are made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020889055.3U CN212281563U (en) | 2020-05-25 | 2020-05-25 | Rotary type medical endoscope lower injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020889055.3U CN212281563U (en) | 2020-05-25 | 2020-05-25 | Rotary type medical endoscope lower injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212281563U true CN212281563U (en) | 2021-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020889055.3U Expired - Fee Related CN212281563U (en) | 2020-05-25 | 2020-05-25 | Rotary type medical endoscope lower injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212281563U (en) |
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2020
- 2020-05-25 CN CN202020889055.3U patent/CN212281563U/en not_active Expired - Fee Related
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