CN112790856B - Disposable mucosa incision knife with injection needle and use method - Google Patents
Disposable mucosa incision knife with injection needle and use method Download PDFInfo
- Publication number
- CN112790856B CN112790856B CN202110060943.3A CN202110060943A CN112790856B CN 112790856 B CN112790856 B CN 112790856B CN 202110060943 A CN202110060943 A CN 202110060943A CN 112790856 B CN112790856 B CN 112790856B
- Authority
- CN
- China
- Prior art keywords
- injection needle
- tube
- knife
- incision knife
- cutter
- 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.)
- Active
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
- A61B2018/00482—Digestive system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/00607—Coagulation and cutting with the same instrument
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/061—Measuring instruments not otherwise provided for for measuring dimensions, e.g. length
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/08—Accessories or related features not otherwise provided for
- A61B2090/0801—Prevention of accidental cutting or pricking
- A61B2090/08021—Prevention of accidental cutting or pricking of the patient or his organs
Abstract
A disposable mucosa incision knife with an injection needle and a using method thereof comprise a mucosa incision knife component (1), an injection needle component (2) and a connecting block (3) which integrates the mucosa incision knife component (1) and the injection needle component (2). The mucosa incision knife component (1) comprises an incision knife core bar, a thumb ring, scale marks, a sheath tube, a finger ring, a high-frequency current connector, a knife steel tube, a sliding block, a connector fixing groove and an incision knife. The injection needle assembly (2) comprises an injection needle core rod, a protective tube, a telescopic rod, a holding part, an injection port, an injection needle and a marking line. The connecting block (3) comprises a fixing body, a connecting body, a reserved opening B and a reserved opening A. The invention has simple and convenient operation and easy grasp, is convenient for the operator to use and control the lengths of the tool bit and the needle head, improves the safety of the use of the instrument and saves the operation treatment time.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to a disposable mucosa incision knife with an injection needle and a using method thereof.
Background
Endoscopic mucosal dissection (ESD) is a new treatment means in recent years, and refers to an endoscopic minimally invasive technique for performing submucosal dissection on lesions larger than 2cm by using various electrotomes, and can treat precancerous lesions such as giant polyp of gastrointestinal tract, lateral developmental tumor, severe atypical hyperplasia and high-level intraepithelial neoplasia, early cancer of esophagus and gastrointestinal tract, esophagus and submucosal tumor of gastrointestinal tract. The technique can realize the whole excision of larger lesions and provide accurate pathological diagnosis staging. With the continuous development of endoscopic instruments, ESD becomes the first choice treatment method for early cancer and precancerous lesion of digestive tract, and has the advantages of definite curative effect, small wound, quick recovery, complete and accurate pathological diagnosis and the like.
Compared with surgical operation, the utility model can maintain normal physiological structure and has little influence on the quality of life of patients after operation. In the operation process, liquid such as physiological saline and the like is injected under the mucosa to form a water cushion at the submucosa, and the use of different cutting knives to cut off the focus is an important link for ensuring the success of the operation.
An important surgical instrument for endoscopic mucosal dissection is a mucosal incision knife. Common cutting knives for stripping early cancers on the market are needle knives, IT knives (with ceramic heads), hook knives, triangular knives, Flush knives, woodpecker knives and the like.
As an important means in the treatment of digestive tract lesions, in order to prevent perforation caused in the operation process, a doctor often needs to inject physiological saline under the mucosa to a position with a high focus first in the process of performing mucosa dissection operation under an endoscope, a mucosa incision knife needs to be replaced after the injection with an injection needle, the physiological saline injected in the operation process can run off along with the operation time, a large amount of time can be wasted in the process of injecting the physiological saline again, and the risk of perforation in the operation is increased because the loss of the physiological saline in the operation can not be supplemented in time.
The invention patent with the patent application number of CN201410281645.7 discloses a combined electric knife, wherein the knife head part comprises at least two or more knife heads which can move or rotate relatively, and doctors can select proper electric knife types for the tissues of the focus part according to the condition analysis and judgment of the tissues of the focus part and different states of the proper electric knife, so that the operation is safe and quick.
The invention patent with the patent application number of 201510937882.9 discloses a multifunctional knife combining an IT knife, a needle knife and water spraying, which has the functions of the IT knife and the needle knife, and also has the function of water spraying, and the sprayed liquid can wash out blood spots, improve the visual field of an endoscope, and also wash burnt tissues adhered to an electrode.
However, the aforesaid patent still can not cover up ESD technique complicated operation, and it is long-lived, the technical requirement to the operation doctor is rigorous, postoperative bleeding, perforation scheduling complication incidence such as high. The main reason for this is that the following problems exist with the current devices used for ESD treatment:
problem 1: at present, the mucosa incision knife and the injection needle which are generally used clinically are two independent instruments, which are expensive, and the cost expenditure of hospitals and the economic burden of patients are increased.
Problem 2: the mucosa incision knife and the injection needle are two independent instruments, so that the operation of an operator is not easy to master, and the incision depth of the mucosa incision knife is not easy to control.
Problem 3: before the lesion is cut off, a needle needs to be used for lifting the lesion to a lesion injection water cushion, then the lesion is peeled off by a mucosa incision knife, the mucosa incision knife and the needle are two independent instruments, an operator needs to replace the needle back and forth, and the operation is tedious and consumes a large amount of time.
Problem 4: the apparatus all need be in when business turn over scope chamber way and close the recovery state, but in the reality at the change apparatus in-process repeatedly, often has the phenomenon that personnel use the apparatus improper (forget to close tool bit and syringe needle and retrieve in the protective sheath) to cause accurate and expensive endoscope damage, unable normal use has increased the fault rate and the maintenance cost of endoscope, has also increased patient's treatment time and effect simultaneously.
Problem 5: although some mucosa incision knives on the market have an injection function, the knife head of the mucosa incision knife is integrated with the needle head of an injection needle, the injection wound surface is large, and the mucosa incision knife is provided with an electric pump, so that the cost is increased, the price is high, the structure is complex, the force is too large during injection, the water quantity is not easy to control, the excessive depth of injection is easy, and the injection liquid is wasted; the length of the knife head of the mucosa incision knife is too long and is not easy to control, so that the pathological change is easily stripped to a too deep depth, and the risks of bleeding and perforation are increased.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides a disposable mucosa incision knife with an injection needle and a using method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the disposable mucosa incision knife with the injection needle comprises a mucosa incision knife component 1, an injection needle component 2 and a connecting block 3 which integrates the mucosa incision knife component 1 and the injection needle component 2; wherein the content of the first and second substances,
the mucosa incision knife component 1 comprises an incision knife core bar 101, a thumb ring 102, scale marks 103, a sheath tube 104, a finger ring 105, a high-frequency current connector 106, a cutter steel tube 107, a sliding block 108, a connector fixing groove 109 and an incision knife 110;
a thumb ring 102 in a circular ring shape is arranged at the tail of the incision knife core bar 101, a scale mark 103 is arranged on the outer surface of the center of the incision knife core bar 101, and a U-shaped sliding groove is arranged inside the incision knife core bar 101;
the hollow hole of the slide block 108 is sleeved in the chute of the cutting knife core rod 101;
the cross section of the cutter steel tube 107 is in a hollow round tube shape, the front end of the cutter steel tube 107 extends into the sheath tube 104, and the tail part of the sheath tube 104 is fixed at the head part of the incision cutter core rod 101; the rear end of the cutter steel tube 107 extends into a chute of the incision cutter core bar 101 and is welded and fixed with the high-frequency current connector 106 in the connector fixing groove 109; the high-frequency current connector 106 is connected with external high-frequency electrotome equipment to electrify the cutter steel pipe 107;
when the cutting knife is used, the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, and the three fingers are clamped and extended, so that the sliding block 108 moves back and forth on the cutting knife core rod 101, and the cutting knife steel pipe 107 is driven to retract and extend in the sheath pipe 104 through the high-frequency current connector 106;
the injection needle assembly 2 comprises an injection needle core bar 201, a protective tube 202, an expansion link 203, a holding part 204, an injection port 205, an injection needle 206 and a marking line 207;
the inside of the injection needle core bar 201 is hollow, a hollow protective tube 202 is fixed at the front end of the injection needle core bar 201, the front end of the protective tube 202 is fixed on the connecting block 3, a telescopic rod 203 is inserted at the inner side of the tail part of the injection needle core bar 201, and a marking line 207 is arranged on the outer surface of the telescopic rod 203; a holding part 204 is fixed at the tail part of the telescopic rod 203, and an injection port 205 is arranged at the rear end of the holding part 204; injection port 205 is a mobile luer fitting; an injection needle 206 penetrates through the protective tube 202, the injection needle core rod 201, the telescopic rod 203 and the holding part 204, the rear end of the injection needle 206 and the holding part 204 are integrated, and the front end of the injection needle 206 extends into the connecting block 3;
when in use, the injection needle core bar 201 is held by one hand, the holding part 204 is held by one hand, and the hand holding the holding part 204 can be pushed forwards and pulled backwards, so as to drive the injection needle 206 inside to be pushed forwards and pulled backwards in the protective tube 202 and the injection needle core bar 201;
the connecting block 3 comprises a connecting body 302 arranged outside the sheath tube 104, the tail part of the connecting body 302 is provided with a fixing body 301 with a through hole, and the tail part of the fixing body 301 is connected with the protective tube 202; a cavity structure is arranged in the connecting block 3, a reserved opening A304 with a certain length is formed in a sheath tube 104 in the cavity structure, and a reserved opening B303 with a certain length is formed in a corresponding cutter steel tube 107 in the sheath tube 104;
the injection needle 206 extends into the cavity inside the connecting block 3 from the protective tube 202, and then extends into the cutter steel tube 107 through the reserved opening a304 and the reserved opening B303 until the foremost end of the cutter steel tube 107.
The use method of the disposable mucosa incision knife with the injection needle comprises the following steps:
step 1: connecting the high-frequency current connector 106 with high-frequency equipment, and connecting an injector on the injection port 205;
step 2:
the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, the three fingers are clamped tightly, so that the sliding block 108 moves forwards on the cutting knife core bar 101, the cutting knife steel tube 107 is driven to extend out of the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 extends out;
then, holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pulling back the hand holding the holding part 204, thereby driving the internal injection needle 206 to pull back in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 retracts into the cutter steel tube 107;
opening the high-frequency equipment, and performing electrocoagulation on the periphery of the tissue to be cut to form a closed ring;
and step 3:
the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, and the three fingers are extended, so that the sliding block 108 moves backwards on the cutting knife core bar 101, and then the cutting knife steel tube 107 is driven to retract in the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 retracts in the protective groove 111;
then, holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pushing forward by the hand holding the holding part 204, thereby driving the internal injection needle 206 to push forward in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 extends out of the cutter steel tube 107;
the injection needle 206 is inserted into the tissue, and the liquid to be injected is injected into the tissue to be cut through pushing the injector, so that the tissue is raised to meet the requirement;
and 4, step 4:
holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pulling back the hand holding the holding part 204, so as to drive the internal injection needle 206 to pull back in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 retracts into the cutter steel tube 107;
then, the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, the three fingers are clamped tightly, so that the sliding block 108 moves forwards on the cutting knife core bar 101, the cutting knife steel tube 107 is driven to extend out of the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 extends out;
cutting the raised tissue with a cutting blade 110;
and 5: the steps 3 and 4 can be repeated, so that the tissue is completely separated from the human body.
The invention also has the following additional technical features:
the technical scheme of the invention is further specifically optimized as follows: the outer diameter of the injection needle 206 is smaller than the inner diameter of the cutter steel tube 107, the outer diameter of the cutter steel tube 107 is smaller than the inner diameter of the sheath 104, and the outer diameter of the sheath 104 is smaller than 3.2 mm.
The technical scheme of the invention is further specifically optimized as follows: the upper and lower sides of the foremost end of the cutter steel pipe 107 are provided with outward convex cutting knives 110, and the foremost end of the sheath pipe 104 is provided with a protective groove 111 adapted to the shape of the cutting knives 110.
The technical scheme of the invention is further specifically optimized as follows: the length of the injection needle 206, the cutter steel tube 107 and the sheath 104 is 200mm as measured from the joint block 3.
Compared with the prior art, the invention has the advantages that:
the method has the advantages that: the operation is simple and convenient, the operation is easy to master, although the mucosa incision knife and the injection needle share the same protective cavity sheath, the mucosa incision knife and the injection needle are two different instruments, the operation doctor can conveniently use and control the lengths of the knife head and the needle head, and the use safety of the instruments is improved.
The method has the advantages that: in the using process, an operator does not need to replace the instrument back and forth, and the endoscope failure rate and the maintenance cost caused by improper manual use of the instrument are reduced. And the operation is more convenient, and the operation treatment time is saved.
The method has the advantages that: the injection needle and the mucosa incision knife are integrated, so that the cost is saved.
The advantages are that: the sheath 104 is made of insulating material, which protects the surrounding mucosa from electric burn and reduces the risk of bleeding and perforation.
The advantages are that: in order to facilitate observation of the extension lengths of the cutting steel tube 107 and the injection needle 206, the outer surface of the center of the cutting knife core bar 101 is provided with a scale mark 103 for distinguishing the moving distance, and the outer surface of the telescopic rod 203 is provided with a mark 207 for distinguishing the moving distance.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view showing the overall structure of the mucosa cutter using the injection needle of the present invention;
FIG. 2 is a schematic view of the mucosal cutting blade assembly 1 of the present invention;
FIG. 3 is a schematic view of the structure of the injection needle assembly 2 of the present invention;
FIG. 4 is a schematic structural view of a connecting block 3 according to the present invention;
FIG. 5 is a schematic view of the needle 206 and the knife 110 of the present invention in a retracted state;
fig. 6 is a schematic structural view showing the injection needle 206 of the present invention in an extended state and the incision knife 110 in a retracted state (injection state);
fig. 7 is a schematic structural view of the present invention in the state where the cutter 110 is extended and the injection needle 206 is retracted (cutter state);
fig. 8 is a schematic view showing the structure of an end portion of the mucosa cutter using the injection needle of the present invention.
Description of reference numerals: a mucosa incision knife assembly 1; a slitting knife core bar 101; a thumb ring 102; scale lines 103; a sheath 104; a finger ring 105; a high-frequency current terminal 106; a cutter steel tube 107; a slider 108; a joint fixing groove 109; a cutter blade 110; a shield bath 111; an injection needle assembly 2; an injection needle core bar 201; a protective tube 202; an expansion link 203; a grip portion 204; an injection port 205; an injection needle 206; a marking line 207; a connecting block 3; a fixed body 301; a connection body 302; a reserved port B303; port a304 is reserved.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings, in order that the present disclosure may be more fully understood and fully conveyed to those skilled in the art. While the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the invention is not limited to the embodiments set forth herein.
The disposable mucosa incision knife with the injection needle comprises a mucosa incision knife component 1, an injection needle component 2 and a connecting block 3 which integrates the mucosa incision knife component 1 and the injection needle component 2.
The mucosa incision knife component 1 comprises an incision knife core bar 101, a thumb ring 102, scale marks 103, a sheath tube 104, a finger ring 105, a high-frequency current connector 106, a knife steel tube 107, a sliding block 108, a connector fixing groove 109 and an incision knife 110.
A thumb ring 102 in a circular ring shape is arranged at the tail of the cutting knife core bar 101, a scale mark 103 is arranged on the outer surface of the center of the cutting knife core bar 101, and a U-shaped sliding groove is arranged inside the cutting knife core bar 101.
Finger rings 105 symmetrically arranged are arranged on two sides of the sliding block 108, a U-shaped joint fixing groove 109 is formed in one side of the front end of the sliding block 108, the joint fixing groove 109 is used for placing and fixing the high-frequency current joint 106, and an O-shaped hollow hole is formed in the sliding block 108.
The hollow hole of the slide block 108 is sleeved in the sliding groove of the cutting knife core rod 101.
The cross section of the cutter steel tube 107 is in a hollow round tube shape, the front end of the cutter steel tube 107 extends into the sheath tube 104, and the tail part of the sheath tube 104 is fixed at the head part of the incision cutter core rod 101; the rear end of the cutter steel tube 107 extends into a chute of the incision cutter core bar 101 and is welded and fixed with the high-frequency current connector 106 in the connector fixing groove 109; the high-frequency current connector 106 is connected to an external high-frequency electric knife device to energize the cutter steel pipe 107.
The upper and lower sides of the foremost end of the cutter steel pipe 107 are provided with outward convex cutting knives 110, and the foremost end of the sheath pipe 104 is provided with a protective groove 111 adapted to the shape of the cutting knives 110.
When the cutting knife is used, the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, the three fingers are clamped and stretched, the sliding block 108 moves back and forth on the cutting knife core rod 101, and then the cutting knife steel pipe 107 is driven to retract and extend in the sheath pipe 104 through the high-frequency current connector 106.
The needle assembly 2 includes a needle core bar 201, a guard tube 202, a telescopic rod 203, a grip 204, an injection port 205, an injection needle 206, and a marking wire 207.
The inside of the injection needle core bar 201 is hollow, a hollow protective tube 202 is fixed at the front end of the injection needle core bar 201, the front end of the protective tube 202 is fixed on the connecting block 3, a telescopic rod 203 is inserted at the inner side of the tail part of the injection needle core bar 201, and a marking line 207 is arranged on the outer surface of the telescopic rod 203; a holding part 204 is fixed at the tail part of the telescopic rod 203, and an injection port 205 is arranged at the rear end of the holding part 204; injection port 205 is a mobile luer fitting; an injection needle 206 is inserted through the guard tube 202, the injection needle core rod 201, the expansion link 203, and the grip 204, the rear end of the injection needle 206 is integrated with the grip 204, and the front end of the injection needle 206 is inserted into the connection block 3.
In use, the needle stem 201 is held by one hand, the grip portion 204 is held by one hand, and the hand holding the grip portion 204 can be pushed forward and pulled backward, thereby driving the inner needle 206 to be pushed forward and pulled backward in the protection tube 202 and the needle stem 201.
The connecting block 3 comprises a connecting body 302 arranged outside the sheath tube 104, the tail part of the connecting body 302 is provided with a fixing body 301 with a through hole, and the tail part of the fixing body 301 is connected with the protective tube 202; the inside of connecting block 3 is provided with the cavity structure, and sheath 104 in the cavity structure is opened has the reservation mouth A304 of certain length, and the cutter steel pipe 107 that the inside of sheath 104 corresponds is opened has the reservation mouth B303 of certain length.
The injection needle 206 extends into the cavity inside the connecting block 3 from the protective tube 202, and then extends into the cutter steel tube 107 through the reserved opening a304 and the reserved opening B303 until the foremost end of the cutter steel tube 107.
Optimally, the outer diameter of the injection needle 206 is smaller than the inner diameter of the cutter steel tube 107, the outer diameter of the cutter steel tube 107 is smaller than the inner diameter of the sheath 104, and the outer diameter of the sheath 104 is smaller than 3.2 mm.
Optimally, the length of the injection needle 206, the cutter steel tube 107 and the sheath 104 is 200mm, measured from the connecting block 3.
The use method of the disposable mucosa incision knife with the injection needle comprises the following steps:
step 1: the high-frequency current connector 106 is connected to a high-frequency device, and an injector is connected to the injection port 205.
Step 2:
the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, the three fingers are clamped tightly, so that the sliding block 108 moves forwards on the cutting knife core bar 101, the cutting knife steel tube 107 is driven to extend out of the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 extends out;
then, holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pulling back the hand holding the holding part 204, thereby driving the internal injection needle 206 to pull back in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 retracts into the cutter steel tube 107;
the high frequency device is turned on to electrocoagulate the surrounding tissue to be cut to form a closed loop.
And step 3:
the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, and the three fingers are extended, so that the sliding block 108 moves backwards on the cutting knife core bar 101, and then the cutting knife steel tube 107 is driven to retract in the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 retracts in the protective groove 111;
then, holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pushing forward by the hand holding the holding part 204, thereby driving the internal injection needle 206 to push forward in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 extends out of the cutter steel tube 107;
the injection needle 206 is inserted into the tissue, and the liquid to be injected is injected into the tissue to be incised by pushing the injector, so that the tissue is raised to meet the requirement.
And 4, step 4:
holding the injection needle core bar 201 by one hand, holding the holding part 204 by one hand, and pulling back the hand holding the holding part 204, so as to drive the internal injection needle 206 to pull back in the protective tube 202 and the injection needle core bar 201, so that the injection needle 206 retracts into the cutter steel tube 107;
then, the thumb is placed in the thumb ring 102, the index finger and the middle finger are placed in the finger ring 105, the three fingers are clamped tightly, so that the sliding block 108 moves forwards on the cutting knife core bar 101, the cutting knife steel tube 107 is driven to extend out of the sheath tube 104 through the high-frequency current connector 106, and finally the cutting knife 110 extends out;
the raised tissue is cut by the incision knife 110.
And 5: the steps 3 and 4 can be repeated, so that the tissue is completely separated from the human body.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described above with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the above detailed description of the embodiments of the invention presented in the drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (4)
1. The disposable mucosa incision knife with the injection needle is characterized by comprising a mucosa incision knife component (1), an injection needle component (2) and a connecting block (3) which integrates the mucosa incision knife component (1) and the injection needle component (2); wherein the content of the first and second substances,
the mucosa incision knife component (1) comprises an incision knife core bar (101), a thumb ring (102), scale marks (103), a sheath tube (104), a finger ring (105), a high-frequency current joint (106), a cutter steel tube (107), a sliding block (108), a joint fixing groove (109) and an incision knife (110);
a circular thumb ring (102) is arranged at the tail of the cutting knife core bar (101), scale marks (103) are arranged on the outer surface of the center of the cutting knife core bar (101), and a U-shaped sliding groove is formed in the cutting knife core bar (101);
finger rings (105) symmetrically arranged are arranged on two sides of the sliding block (108), a U-shaped joint fixing groove (109) is arranged on one side of the front end of the sliding block (108), the joint fixing groove (109) is used for placing and fixing a high-frequency current joint (106), and an O-shaped hollow hole is formed in the sliding block (108);
the hollow hole of the sliding block (108) is sleeved in the sliding groove of the cutting knife core rod (101);
the cross section of the cutter steel tube (107) is in a hollow round tube shape, the front end of the cutter steel tube (107) extends into the sheath tube (104), and the tail part of the sheath tube (104) is fixed at the head part of the incision cutter core rod (101); the rear end of the cutter steel pipe (107) extends into a chute of the cutter core rod (101) and is welded and fixed with a high-frequency current joint (106) in a joint fixing groove (109); the high-frequency current joint (106) is connected with external high-frequency electrotome equipment to electrify the cutter steel pipe (107);
the injection needle assembly (2) comprises an injection needle core bar (201), a protective tube (202), a telescopic rod (203), a holding part (204), an injection port (205), an injection needle (206) and a marking line (207);
the inside of the injection needle core bar (201) is hollow, a hollow protective tube (202) is fixed at the front end of the injection needle core bar (201), the front end of the protective tube (202) is fixed on the connecting block (3), an expansion link (203) is inserted into the inner side of the tail part of the injection needle core bar (201), and a marking line (207) is arranged on the outer surface of the expansion link (203); a holding part (204) is fixed at the tail part of the telescopic rod (203), and an injection port (205) is arranged at the rear end of the holding part (204); the injection port (205) is a mobile luer connector; an injection needle (206) penetrates through the protective tube (202), the injection needle core rod (201), the telescopic rod (203) and the holding part (204), the rear end of the injection needle (206) and the holding part (204) are integrated, and the front end of the injection needle (206) extends into the connecting block (3);
the connecting block (3) comprises a connecting body (302) arranged on the outer side of the sheath tube (104), the tail part of the connecting body (302) is provided with a fixing body (301) with a through hole, and the tail part of the fixing body (301) is connected with the protective tube (202); a cavity structure is arranged in the connecting block (3), a reserved opening A (304) with a certain length is formed in a sheath tube (104) in the cavity structure, and a reserved opening B (303) with a certain length is formed in a cutter steel tube (107) corresponding to the interior of the sheath tube (104);
the injection needle (206) extends into the cavity inside the connecting block (3) from the protective tube (202), and then extends into the cutter steel tube (107) through the reserved opening A (304) and the reserved opening B (303) until the foremost end of the cutter steel tube (107);
the use method of the disposable mucosa incision knife with the injection needle comprises the following steps:
step (1): connecting a high-frequency current connector (106) with high-frequency equipment, and connecting an injector on an injection port (205);
step (2):
the thumb is placed in the thumb ring (102), the index finger and the middle finger are placed in the finger ring (105), and the three fingers are clamped tightly, so that the sliding block (108) moves forwards on the incision knife core bar (101), the high-frequency current connector (106) drives the cutter steel tube (107) to extend out of the sheath tube (104), and finally the incision knife (110) extends out;
then, holding the injection needle core rod (201) by one hand, holding the holding part (204) by one hand, and pulling back the hand holding the holding part (204), further driving the internal injection needle (206) to pull back in the protective tube (202) and the injection needle core rod (201), so that the injection needle (206) retracts into the cutter steel tube (107);
and (3):
the thumb is placed in the thumb ring (102), the index finger and the middle finger are placed in the finger ring (105), and the three fingers are extended, so that the sliding block (108) moves backwards on the cutting knife core rod (101), the cutting knife steel pipe (107) is driven to retract in the sheath pipe (104) through the high-frequency current connector (106), and finally the cutting knife (110) retracts in the protective groove (111);
then, holding the injection needle core rod (201) by one hand, holding the holding part (204) by one hand, and pushing forward by the hand holding the holding part (204), further driving the internal injection needle (206) to push forward in the protective tube (202) and the injection needle core rod (201), so that the injection needle (206) extends out of the cutter steel tube (107);
and (4):
the injection needle core rod (201) is held by one hand, the holding part (204) is held by one hand, the hand holding the holding part (204) can be pulled backwards, and then the injection needle (206) in the inner part is driven to be pulled backwards in the protective tube (202) and the injection needle core rod (201), so that the injection needle (206) retracts into the cutter steel tube (107);
then, a thumb is placed in a thumb ring (102), a forefinger and a middle finger are placed in a finger ring (105), and three fingers are clamped tightly, so that the sliding block (108) moves forwards on the cutting knife core rod (101), the cutting knife steel pipe (107) is driven to extend out of the sheath pipe (104) through the high-frequency current connector (106), and finally the cutting knife (110) extends out;
and (5): and (4) repeating the step (3) and the step (4) so as to ensure that the tissues are completely separated from the human body.
2. A single-use mucosal incision knife with injection needle according to claim 1, wherein: the outer diameter of the injection needle (206) is smaller than the inner diameter of the cutter steel tube (107), the outer diameter of the cutter steel tube (107) is smaller than the inner diameter of the sheath tube (104), and the outer diameter of the sheath tube (104) is smaller than 3.2 mm.
3. A single-use mucosal incision knife with injection needle according to claim 1, wherein: the upper side and the lower side of the foremost end of the cutter steel pipe (107) are provided with outward convex cutting knives (110), and the foremost end of the sheath pipe (104) is provided with a protective groove (111) which is matched with the shapes of the cutting knives (110).
4. A single-use mucosal incision knife with injection needle according to claim 1, wherein: the length of the injection needle (206), the cutter steel tube (107) and the sheath tube (104) is 200mm measured from the connecting block (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110060943.3A CN112790856B (en) | 2021-01-18 | 2021-01-18 | Disposable mucosa incision knife with injection needle and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110060943.3A CN112790856B (en) | 2021-01-18 | 2021-01-18 | Disposable mucosa incision knife with injection needle and use method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112790856A CN112790856A (en) | 2021-05-14 |
| CN112790856B true CN112790856B (en) | 2022-04-05 |
Family
ID=75809990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110060943.3A Active CN112790856B (en) | 2021-01-18 | 2021-01-18 | Disposable mucosa incision knife with injection needle and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112790856B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113875806B (en) * | 2021-10-15 | 2022-12-06 | 福建岳海水产食品有限公司 | Squid peeling method and device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2679187A1 (en) * | 2012-06-26 | 2014-01-01 | Taewoong Medical Co., Ltd. | High-frequency treatment device |
| CN207613865U (en) * | 2017-05-15 | 2018-07-17 | 浙江创想医学科技有限公司 | Multifunctional high frequency electric knife under scope |
| CN108309439A (en) * | 2018-05-09 | 2018-07-24 | 诸暨市鹏天医疗器械有限公司 | A kind of adjustable incision knife of syringe needle and its application method |
| CN108814711A (en) * | 2018-08-14 | 2018-11-16 | 浙江创想医学科技有限公司 | A kind of novel mucous membrane incision knife |
| CN211433175U (en) * | 2019-11-18 | 2020-09-08 | 常州市久虹医疗器械有限公司 | Water injection type mucosa incision knife |
| CN111658128A (en) * | 2020-07-08 | 2020-09-15 | 安瑞医疗器械(杭州)有限公司 | Multifunctional high-frequency cutter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105434038B (en) * | 2015-12-15 | 2018-07-06 | 安瑞医疗器械(杭州)有限公司 | A kind of endoscope-use multifunctional high frequency cutter |
| CN110833441A (en) * | 2019-06-19 | 2020-02-25 | 宋健 | Novel multi-functional mucosa incision sword |
-
2021
- 2021-01-18 CN CN202110060943.3A patent/CN112790856B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2679187A1 (en) * | 2012-06-26 | 2014-01-01 | Taewoong Medical Co., Ltd. | High-frequency treatment device |
| CN207613865U (en) * | 2017-05-15 | 2018-07-17 | 浙江创想医学科技有限公司 | Multifunctional high frequency electric knife under scope |
| CN108309439A (en) * | 2018-05-09 | 2018-07-24 | 诸暨市鹏天医疗器械有限公司 | A kind of adjustable incision knife of syringe needle and its application method |
| CN108814711A (en) * | 2018-08-14 | 2018-11-16 | 浙江创想医学科技有限公司 | A kind of novel mucous membrane incision knife |
| CN211433175U (en) * | 2019-11-18 | 2020-09-08 | 常州市久虹医疗器械有限公司 | Water injection type mucosa incision knife |
| CN111658128A (en) * | 2020-07-08 | 2020-09-15 | 安瑞医疗器械(杭州)有限公司 | Multifunctional high-frequency cutter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112790856A (en) | 2021-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7588557B2 (en) | Medical instrument for fluid injection and related method | |
| JP5180081B2 (en) | Endoscopic treatment tool | |
| KR101830085B1 (en) | High frequency knife for endoscopic submucosal dissection with multiple tips | |
| CA3097932C (en) | Multifunctional high-frequency electric knife | |
| CN105395251B (en) | A kind of scope electric knife | |
| CN104519810B (en) | Puncture tool and ultrasonic endoscope | |
| US20100198066A1 (en) | Method and Device for Obtaining Tissue Samples | |
| WO2022007732A1 (en) | High-frequency tool having multiple functions | |
| WO2022007733A1 (en) | Multifunctional high-frequency cutter for endoscope | |
| CN103110457B (en) | Mucous membrane separating scalpel | |
| CN112790856B (en) | Disposable mucosa incision knife with injection needle and use method | |
| CN207613865U (en) | Multifunctional high frequency electric knife under scope | |
| KR20210007811A (en) | A medical dispensing mechanism capable of combining multiple of treatment tools having an independent driving range | |
| WO2018006455A1 (en) | Bipolar high-frequency electric knife | |
| CN108814711A (en) | A kind of novel mucous membrane incision knife | |
| KR101491846B1 (en) | Apparatus for endoscopic submucosal dissection | |
| CN213406254U (en) | Multifunctional high-frequency cutter for endoscope | |
| CN210044113U (en) | High-frequency composite electric knife | |
| KR100596554B1 (en) | Apparatus for endoscopic mucosal resection | |
| CN209074869U (en) | A kind of novel mucous membrane incision knife | |
| CN205234632U (en) | High frequency electric sword for scope | |
| CN213430509U (en) | Multifunctional high-frequency cutter | |
| KR20190020601A (en) | High frequency knife for endoscopic submucosal dissection with multiple tips | |
| CN111317549B (en) | Ultrasonic endoscope puncture needle system in power-on mode | |
| WO2022007734A1 (en) | High frequency electrical instrument for use with endoscope |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230425 Address after: No. 70 Huayang Road, Lixia District, Jinan City, Shandong Province, 250000 Patentee after: SHANDONG YUHUA ELECTRIC Co.,Ltd. Address before: Cancer Hospital Affiliated to Shandong First Medical University, 440 Jiyan Road, Huaiyin District, Jinan City, Shandong Province Patentee before: Affiliated Tumor Hospital of Shandong First Medical University (Shandong cancer prevention and treatment institute Shandong Cancer Hospital) |